ANDROID: Block: Add OEM data to struct blkcg and struct blkcg_gq

Add ANDROID_OEM_DATA to struct blkcg and struct blkcg_gq, which is
used to implement OEM's blkcg weight. TEach system task has different
importance and priority. Generally, foreground applications and VIP
applications require more I/O bandwidth and lower I/O latency. Therefore, it
is necessary to add OEM-defined weights in blkcg to quickly process
high-priority tasks.

Bug: 337973184
Change-Id: Idd6286235a9ff99feef746d713e09ce2093fa904
Signed-off-by: Dezhi Huang <huangdezhi@hihonor.com>
(cherry picked from commit 84984a8cb73c74c9194c82fb06428924a2d35218)

block/blk-cgroup.h

@@ -20,6 +20,7 @@
 #include <linux/blk-mq.h>
 #include <linux/llist.h>
 #include "blk.h"
+#include <linux/android_vendor.h>
 
 struct blkcg_gq;
 struct blkg_policy_data;
@@ -89,6 +90,8 @@ struct blkcg_gq {
 	int				last_use;
 
 	struct rcu_head			rcu_head;
+
+	ANDROID_OEM_DATA(1);
 };
 
 struct blkcg {
@@ -117,6 +120,8 @@ struct blkcg {
 #ifdef CONFIG_CGROUP_WRITEBACK
 	struct list_head		cgwb_list;
 #endif
+
+	ANDROID_OEM_DATA(1);
 };
 
 static inline struct blkcg *css_to_blkcg(struct cgroup_subsys_state *css)