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/linux/vdpa.h b/libc/kernel/uapi/linux/vdpa.h
index 462d579..a689f0d 100644
--- a/libc/kernel/uapi/linux/vdpa.h
+++ b/libc/kernel/uapi/linux/vdpa.h
@@ -17,6 +17,7 @@
   VDPA_CMD_DEV_GET,
   VDPA_CMD_DEV_CONFIG_GET,
   VDPA_CMD_DEV_VSTATS_GET,
+  VDPA_CMD_DEV_ATTR_SET,
 };
 enum vdpa_attr {
   VDPA_ATTR_UNSPEC,