Update to v6.5 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.5

Test: Builds and bionic unit tests pass on raven.
Test: Able to log in to an Android GO 32 bit device.
Change-Id: Ia0397ce27e088bc20338bbd2d125be6f169c4ba0
diff --git a/libc/kernel/uapi/asm-riscv/asm/auxvec.h b/libc/kernel/uapi/asm-riscv/asm/auxvec.h
index c70be17..30c8bec 100644
--- a/libc/kernel/uapi/asm-riscv/asm/auxvec.h
+++ b/libc/kernel/uapi/asm-riscv/asm/auxvec.h
@@ -28,4 +28,5 @@
 #define AT_L3_CACHESIZE 46
 #define AT_L3_CACHEGEOMETRY 47
 #define AT_VECTOR_SIZE_ARCH 9
+#define AT_MINSIGSTKSZ 51
 #endif