Update to v6.1 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.1

Test: Bionic unit tests pass.
Change-Id: I9414fb5e698a9806b85eb09e37d763849f08a468
diff --git a/libc/kernel/uapi/asm-arm64/asm/hwcap.h b/libc/kernel/uapi/asm-arm64/asm/hwcap.h
index 442600d..af32056 100644
--- a/libc/kernel/uapi/asm-arm64/asm/hwcap.h
+++ b/libc/kernel/uapi/asm-arm64/asm/hwcap.h
@@ -83,4 +83,5 @@
 #define HWCAP2_SME_FA64 (1 << 30)
 #define HWCAP2_WFXT (1UL << 31)
 #define HWCAP2_EBF16 (1UL << 32)
+#define HWCAP2_SVE_EBF16 (1UL << 33)
 #endif