ANDROID: rwsem: Add vendor hook to the rw-semaphore

- Add the hook to apply vendor's performance tune for owner
    of rwsem.

  - Add the hook for the waiter list of rwsem to allow
    vendor perform waiting queue enhancement

  - ANDROID_VENDOR_DATA added to rw_semaphore

Bug: 161400830

Signed-off-by: JianMin Liu <jian-min.liu@mediatek.com>
Change-Id: I007a5e26f3db2adaeaf4e5ccea414ce7abfa83b8

include/linux/rwsem.h

@@ -19,6 +19,7 @@
 #ifdef CONFIG_RWSEM_SPIN_ON_OWNER
 #include <linux/osq_lock.h>
 #endif
+#include <linux/android_vendor.h>
 
 /*
  * For an uncontended rwsem, count and owner are the only fields a task
@@ -51,6 +52,7 @@ struct rw_semaphore {
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 	struct lockdep_map	dep_map;
 #endif
+	ANDROID_VENDOR_DATA(1);
 };
 
 /* In all implementations count != 0 means locked */