Update to v5.9 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.9

Test: Boots cuttlefish 64bit, passes 32 bit and 64 bit bionic unit tests.
Change-Id: Ib5503355b238ea75595538e63eb000c867d06ef7
diff --git a/libc/kernel/uapi/linux/inet_diag.h b/libc/kernel/uapi/linux/inet_diag.h
index 1c3c128..350781c 100644
--- a/libc/kernel/uapi/linux/inet_diag.h
+++ b/libc/kernel/uapi/linux/inet_diag.h
@@ -60,6 +60,7 @@
   INET_DIAG_REQ_NONE,
   INET_DIAG_REQ_BYTECODE,
   INET_DIAG_REQ_SK_BPF_STORAGES,
+  INET_DIAG_REQ_PROTOCOL,
   __INET_DIAG_REQ_MAX,
 };
 #define INET_DIAG_REQ_MAX (__INET_DIAG_REQ_MAX - 1)