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/asm-x86/asm/msr.h b/libc/kernel/uapi/asm-x86/asm/msr.h
index c648410..020bf3a 100644
--- a/libc/kernel/uapi/asm-x86/asm/msr.h
+++ b/libc/kernel/uapi/asm-x86/asm/msr.h
@@ -18,13 +18,12 @@
  ****************************************************************************/
 #ifndef _UAPI_ASM_X86_MSR_H
 #define _UAPI_ASM_X86_MSR_H
-#include <asm/msr-index.h>
 #ifndef __ASSEMBLY__
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/types.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/ioctl.h>
 #define X86_IOC_RDMSR_REGS _IOWR('c', 0xA0, __u32[8])
 #define X86_IOC_WRMSR_REGS _IOWR('c', 0xA1, __u32[8])
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif