Merge tag 'LA.UM.11.2.1.r1-03300-sdm660.0' into staging/lineage-20.0_merge-LA.UM.11.2.1.r1-03300-sdm660.0

"LA.UM.11.2.1.r1-03300-sdm660.0"

# By Vinoth Jayaram
# Via Linux Build Service Account (1) and Vinoth Jayaram (1)
* tag 'LA.UM.11.2.1.r1-03300-sdm660.0':
  gralloc: Fix Compilation errors

Change-Id: I941bb7c0a13bd3ccf25446250b1f725b2021f935
diff --git a/common.mk b/common.mk
index 275c7d2..e362197 100644
--- a/common.mk
+++ b/common.mk
@@ -16,7 +16,7 @@
 
 #Common C flags
 common_flags := -DDEBUG_CALC_FPS -Wno-missing-field-initializers
-common_flags += -Wconversion -Wall -Werror
+common_flags += -Wconversion -Wall -Werror -Wno-sign-conversion
 ifeq ($(TARGET_IS_HEADLESS), true)
     common_flags += -DTARGET_HEADLESS
     LOCAL_CLANG := false