Update to v5.11 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.11

Test: Built cuttlefish and flame images. Ran bionic unit tests on both.
Change-Id: Ie60337aafad4bda55af99b6c8fe9f56bf2fa787f
diff --git a/libc/kernel/uapi/linux/rpl.h b/libc/kernel/uapi/linux/rpl.h
index 4437731..3648bfc 100644
--- a/libc/kernel/uapi/linux/rpl.h
+++ b/libc/kernel/uapi/linux/rpl.h
@@ -29,7 +29,7 @@
 #ifdef __LITTLE_ENDIAN_BITFIELD
   __u32 cmpre : 4, cmpri : 4, reserved : 4, pad : 4, reserved1 : 16;
 #elif defined(__BIG_ENDIAN_BITFIELD)
-  __u32 reserved : 20, pad : 4, cmpri : 4, cmpre : 4;
+  __u32 cmpri : 4, cmpre : 4, pad : 4, reserved : 20;
 #else
 #error "Please fix <asm/byteorder.h>"
 #endif