Updated to v4.4.1 kernel headers.

Small modifications needed to allow compilation with the new headers:

- Manually modify bionic/libc/kernel/uapi/asm-mips/asm/siginfo.h to
  remove the uapi from the include.
- PR_XXX defines are now available for mips, so remove the definition
  from linker_mips.cpp.

Bug: 23789423
Change-Id: I6dc8a03b012426d3a937db15cb24d3a50fab5a8c
diff --git a/libc/kernel/uapi/linux/scif_ioctl.h b/libc/kernel/uapi/linux/scif_ioctl.h
new file mode 100644
index 0000000..6bb51ce
--- /dev/null
+++ b/libc/kernel/uapi/linux/scif_ioctl.h
@@ -0,0 +1,111 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef SCIF_IOCTL_H
+#define SCIF_IOCTL_H
+#include <linux/types.h>
+struct scif_port_id {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u16 node;
+  __u16 port;
+};
+struct scifioctl_connect {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  struct scif_port_id self;
+  struct scif_port_id peer;
+};
+struct scifioctl_accept {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __s32 flags;
+  struct scif_port_id peer;
+  __u64 endpt;
+};
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct scifioctl_msg {
+  __u64 msg;
+  __s32 len;
+  __s32 flags;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __s32 out_len;
+};
+struct scifioctl_reg {
+  __u64 addr;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u64 len;
+  __s64 offset;
+  __s32 prot;
+  __s32 flags;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __s64 out_offset;
+};
+struct scifioctl_unreg {
+  __s64 offset;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u64 len;
+};
+struct scifioctl_copy {
+  __s64 loffset;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __u64 len;
+  __s64 roffset;
+  __u64 addr;
+  __s32 flags;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
+struct scifioctl_fence_mark {
+  __s32 flags;
+  __u64 mark;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
+struct scifioctl_fence_signal {
+  __s64 loff;
+  __u64 lval;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  __s64 roff;
+  __u64 rval;
+  __s32 flags;
+};
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct scifioctl_node_ids {
+  __u64 nodes;
+  __u64 self;
+  __s32 len;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
+#define SCIF_BIND _IOWR('s', 1, __u64)
+#define SCIF_LISTEN _IOW('s', 2, __s32)
+#define SCIF_CONNECT _IOWR('s', 3, struct scifioctl_connect)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SCIF_ACCEPTREQ _IOWR('s', 4, struct scifioctl_accept)
+#define SCIF_ACCEPTREG _IOWR('s', 5, __u64)
+#define SCIF_SEND _IOWR('s', 6, struct scifioctl_msg)
+#define SCIF_RECV _IOWR('s', 7, struct scifioctl_msg)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SCIF_REG _IOWR('s', 8, struct scifioctl_reg)
+#define SCIF_UNREG _IOWR('s', 9, struct scifioctl_unreg)
+#define SCIF_READFROM _IOWR('s', 10, struct scifioctl_copy)
+#define SCIF_WRITETO _IOWR('s', 11, struct scifioctl_copy)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SCIF_VREADFROM _IOWR('s', 12, struct scifioctl_copy)
+#define SCIF_VWRITETO _IOWR('s', 13, struct scifioctl_copy)
+#define SCIF_GET_NODEIDS _IOWR('s', 14, struct scifioctl_node_ids)
+#define SCIF_FENCE_MARK _IOWR('s', 15, struct scifioctl_fence_mark)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define SCIF_FENCE_WAIT _IOWR('s', 16, __s32)
+#define SCIF_FENCE_SIGNAL _IOWR('s', 17, struct scifioctl_fence_signal)
+#endif