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/magic.h b/libc/kernel/uapi/linux/magic.h
index 7c7c6c3..16b9752 100644
--- a/libc/kernel/uapi/linux/magic.h
+++ b/libc/kernel/uapi/linux/magic.h
@@ -78,21 +78,24 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CGROUP_SUPER_MAGIC 0x27e0eb
 #define STACK_END_MAGIC 0x57AC6E9D
+#define TRACEFS_MAGIC 0x74726163
 #define V9FS_MAGIC 0x01021997
-#define BDEVFS_MAGIC 0x62646576
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define BDEVFS_MAGIC 0x62646576
 #define BINFMTFS_MAGIC 0x42494e4d
 #define DEVPTS_SUPER_MAGIC 0x1cd1
 #define FUTEXFS_SUPER_MAGIC 0xBAD1DEA
-#define PIPEFS_MAGIC 0x50495045
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define PIPEFS_MAGIC 0x50495045
 #define PROC_SUPER_MAGIC 0x9fa0
 #define SOCKFS_MAGIC 0x534F434B
 #define SYSFS_MAGIC 0x62656572
-#define USBDEVICE_SUPER_MAGIC 0x9fa2
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define USBDEVICE_SUPER_MAGIC 0x9fa2
 #define MTD_INODE_FS_MAGIC 0x11307854
 #define ANON_INODE_FS_MAGIC 0x09041934
 #define BTRFS_TEST_MAGIC 0x73727279
-#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define NSFS_MAGIC 0x6e736673
+#define BPF_FS_MAGIC 0xcafe4a11
+#endif