project: msm8953: disable logging in userdebug builds

add option to disable logging in userdebug builds for hibernation.

Change-Id: I3f6cfaf773bdf696929c9f63d4bfd46e6655a764
diff --git a/project/msm8953.mk b/project/msm8953.mk
index f9a9644..0c21ce0 100644
--- a/project/msm8953.mk
+++ b/project/msm8953.mk
@@ -9,8 +9,12 @@
 ifeq ($(TARGET_BUILD_VARIANT),user)
 DEBUG := 0
 else
+ifeq ($(DISABLE_LOGGING_BL),1)
+DEBUG := 0
+else
 DEBUG := 1
 endif
+endif
 
 EMMC_BOOT := 1