fsm9010: disable logs in user builds

Disable LK logging in user variant builds.

Change-Id: I93069689bbfe4b845193a84abfaadb9312b264be
diff --git a/project/fsm9010.mk b/project/fsm9010.mk
index 1fa0a02..bd48cd7 100644
--- a/project/fsm9010.mk
+++ b/project/fsm9010.mk
@@ -6,7 +6,12 @@
 
 MODULES += app/aboot
 
+ifeq ($(TARGET_BUILD_VARIANT),user)
+DEBUG := 0
+else
 DEBUG := 1
+endif
+
 EMMC_BOOT := 1
 ENABLE_SDHCI_SUPPORT := 0