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/sound/asequencer.h b/libc/kernel/uapi/sound/asequencer.h
index a3826a5..83b38f1 100644
--- a/libc/kernel/uapi/sound/asequencer.h
+++ b/libc/kernel/uapi/sound/asequencer.h
@@ -298,6 +298,7 @@
 #define SNDRV_SEQ_PORT_FLG_GIVEN_PORT (1 << 0)
 #define SNDRV_SEQ_PORT_FLG_TIMESTAMP (1 << 1)
 #define SNDRV_SEQ_PORT_FLG_TIME_REAL (1 << 2)
+#define SNDRV_SEQ_PORT_FLG_IS_MIDI1 (1 << 3)
 #define SNDRV_SEQ_PORT_DIR_UNKNOWN 0
 #define SNDRV_SEQ_PORT_DIR_INPUT 1
 #define SNDRV_SEQ_PORT_DIR_OUTPUT 2