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/if_addr.h b/libc/kernel/uapi/linux/if_addr.h
index 5d8d667..a148de2 100644
--- a/libc/kernel/uapi/linux/if_addr.h
+++ b/libc/kernel/uapi/linux/if_addr.h
@@ -59,15 +59,17 @@
 #define IFA_F_PERMANENT 0x80
 #define IFA_F_MANAGETEMPADDR 0x100
 #define IFA_F_NOPREFIXROUTE 0x200
-struct ifa_cacheinfo {
+#define IFA_F_MCAUTOJOIN 0x400
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define IFA_F_STABLE_PRIVACY 0x800
+struct ifa_cacheinfo {
   __u32 ifa_prefered;
   __u32 ifa_valid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __u32 cstamp;
   __u32 tstamp;
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 #define IFA_RTA(r) ((struct rtattr *) (((char *) (r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifaddrmsg))
 #endif
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */