disable watermark boost

Change-Id: I7f13f763382f1a54616079bc8258997c7f732d91
Signed-off-by: huangzq2 <huangzq2@motorola.com>
Reviewed-on: https://gerrit.mot.com/1625704
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key

mm/page_alloc.c

@@ -332,7 +332,8 @@ int user_min_free_kbytes = -1;
  */
 int watermark_boost_factor __read_mostly;
 #else
-int watermark_boost_factor __read_mostly = 15000;
+/* Moto huangzq2: Disable watermark boost as it's not working fine on kernel 4.19 */
+int watermark_boost_factor __read_mostly = 0;
 #endif
 int watermark_scale_factor = 10;