Update to v6.8 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.8

Test: Builds and bionic unit tests pass on raven.
Test: Able to log in to an Android GO 32 bit device.
Change-Id: I0022cdb20c19726f526acaab2866f1e25794b77e
diff --git a/libc/kernel/uapi/linux/smc_diag.h b/libc/kernel/uapi/linux/smc_diag.h
index be540ac..b358acf 100644
--- a/libc/kernel/uapi/linux/smc_diag.h
+++ b/libc/kernel/uapi/linux/smc_diag.h
@@ -85,5 +85,7 @@
   __aligned_u64 my_gid;
   __aligned_u64 token;
   __aligned_u64 peer_token;
+  __aligned_u64 peer_gid_ext;
+  __aligned_u64 my_gid_ext;
 };
 #endif