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/sock_diag.h b/libc/kernel/uapi/linux/sock_diag.h
index 052779e..4d9e440 100644
--- a/libc/kernel/uapi/linux/sock_diag.h
+++ b/libc/kernel/uapi/linux/sock_diag.h
@@ -39,5 +39,16 @@
   SK_MEMINFO_BACKLOG,
   SK_MEMINFO_VARS,
 };
-#endif
+enum sknetlink_groups {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  SKNLGRP_NONE,
+  SKNLGRP_INET_TCP_DESTROY,
+  SKNLGRP_INET_UDP_DESTROY,
+  SKNLGRP_INET6_TCP_DESTROY,
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  SKNLGRP_INET6_UDP_DESTROY,
+  __SKNLGRP_MAX,
+};
+#define SKNLGRP_MAX (__SKNLGRP_MAX - 1)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#endif