Update to v5.10 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.10

Test: Built cuttlefish and flame images. Ran bionic unit tests on both.
Change-Id: I37ffc850970adcce1febbe2269c202632fce763a
diff --git a/libc/kernel/uapi/asm-arm64/asm/hwcap.h b/libc/kernel/uapi/asm-arm64/asm/hwcap.h
index dcca79b..8a70a52 100644
--- a/libc/kernel/uapi/asm-arm64/asm/hwcap.h
+++ b/libc/kernel/uapi/asm-arm64/asm/hwcap.h
@@ -68,4 +68,5 @@
 #define HWCAP2_DGH (1 << 15)
 #define HWCAP2_RNG (1 << 16)
 #define HWCAP2_BTI (1 << 17)
+#define HWCAP2_MTE (1 << 18)
 #endif