Update to v6.12 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-6.12

Comment out the TAG usage of the __struct_group macro in linux/pkt_cls.h.
The kernel upstream is either going to revert this usage of __struct_group
or fix this in another way. When set, it creates a named struct in an
anonyous union, which is not allowed in C++.

Test: Builds and bionic unit tests pass on raven.
Change-Id: Ibb49550dfdc86fa0fc888b51d893959b6d433c59
diff --git a/libc/kernel/uapi/asm-x86/asm/elf.h b/libc/kernel/uapi/asm-x86/asm/elf.h
new file mode 100644
index 0000000..b66a229
--- /dev/null
+++ b/libc/kernel/uapi/asm-x86/asm/elf.h
@@ -0,0 +1,16 @@
+/*
+ * This file is auto-generated. Modifications will be lost.
+ *
+ * See https://android.googlesource.com/platform/bionic/+/master/libc/kernel/
+ * for more information.
+ */
+#ifndef _UAPI_ASM_X86_ELF_H
+#define _UAPI_ASM_X86_ELF_H
+#include <linux/types.h>
+struct x86_xfeat_component {
+  __u32 type;
+  __u32 size;
+  __u32 offset;
+  __u32 flags;
+} __attribute__((__packed__));
+#endif