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/virtio_config.h b/libc/kernel/uapi/linux/virtio_config.h
index 0d1fc62..1f41faf 100644
--- a/libc/kernel/uapi/linux/virtio_config.h
+++ b/libc/kernel/uapi/linux/virtio_config.h
@@ -23,11 +23,16 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VIRTIO_CONFIG_S_DRIVER 2
 #define VIRTIO_CONFIG_S_DRIVER_OK 4
+#define VIRTIO_CONFIG_S_FEATURES_OK 8
 #define VIRTIO_CONFIG_S_FAILED 0x80
-#define VIRTIO_TRANSPORT_F_START 28
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define VIRTIO_TRANSPORT_F_END 32
+#define VIRTIO_TRANSPORT_F_START 28
+#define VIRTIO_TRANSPORT_F_END 33
+#ifndef VIRTIO_CONFIG_NO_LEGACY
 #define VIRTIO_F_NOTIFY_ON_EMPTY 24
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define VIRTIO_F_ANY_LAYOUT 27
 #endif
+#define VIRTIO_F_VERSION_1 32
+#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */