Update to v5.12 kernel headers.

Kernel headers coming from:

Git: https://android.googlesource.com/kernel/common/
Branch: android-mainline
Tag: android-mainline-5.12

Test: Boots flame device and runs bionic unit tests.
Test: Boots acloud device and runs bionic unit tests.

Change-Id: I8ac107ce9d4978be3ef9517b90ad6ecafd06785a
diff --git a/libc/kernel/uapi/linux/if_link.h b/libc/kernel/uapi/linux/if_link.h
index 3db8a4f..2a5ba5a 100644
--- a/libc/kernel/uapi/linux/if_link.h
+++ b/libc/kernel/uapi/linux/if_link.h
@@ -282,6 +282,8 @@
   IFLA_BRPORT_BACKUP_PORT,
   IFLA_BRPORT_MRP_RING_OPEN,
   IFLA_BRPORT_MRP_IN_OPEN,
+  IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT,
+  IFLA_BRPORT_MCAST_EHT_HOSTS_CNT,
   __IFLA_BRPORT_MAX
 };
 #define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)