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/nexthop.h b/libc/kernel/uapi/linux/nexthop.h
index 5726a66..2443c18 100644
--- a/libc/kernel/uapi/linux/nexthop.h
+++ b/libc/kernel/uapi/linux/nexthop.h
@@ -17,7 +17,7 @@
 struct nexthop_grp {
   __u32 id;
   __u8 weight;
-  __u8 resvd1;
+  __u8 weight_high;
   __u16 resvd2;
 };
 enum {
@@ -28,6 +28,7 @@
 #define NEXTHOP_GRP_TYPE_MAX (__NEXTHOP_GRP_TYPE_MAX - 1)
 #define NHA_OP_FLAG_DUMP_STATS BIT(0)
 #define NHA_OP_FLAG_DUMP_HW_STATS BIT(1)
+#define NHA_OP_FLAG_RESP_GRP_RESVD_0 BIT(31)
 enum {
   NHA_UNSPEC,
   NHA_ID,