msm8916: disable logs in user builds

Added checks on target build variant to suppress
LK logs in user variant builds.

CRs-Fixed: 697570
Change-Id: I25a5fd6ec2c798cd43d731d3f67ab77f2dd26806
diff --git a/project/msm8916.mk b/project/msm8916.mk
index 201f173..1984ab2 100644
--- a/project/msm8916.mk
+++ b/project/msm8916.mk
@@ -6,7 +6,12 @@
 
 MODULES += app/aboot
 
+ifeq ($(TARGET_BUILD_VARIANT),user)
+DEBUG := 0
+else
 DEBUG := 1
+endif
+
 EMMC_BOOT := 1
 
 #DEFINES += WITH_DEBUG_DCC=1