project: msm8952: Add compilation flag for backward compatible verified boot

Verified boot flow has changed in android M, for the backward compatibility
compilation flag is defined which will follow L-MR1 verified boot flow.
This flag will be enabled for OTA upgrades which do not have partition
changes in place.

Change-Id: Ibb7dea05a3ccfac02922024b8064c35fd1506809
diff --git a/project/msm8952.mk b/project/msm8952.mk
index 9a6397f..bb2ef5d 100644
--- a/project/msm8952.mk
+++ b/project/msm8952.mk
@@ -14,13 +14,18 @@
 
 EMMC_BOOT := 1
 
+
 ifeq ($(VERIFIED_BOOT),1)
 ENABLE_MDTP_SUPPORT := 1
+ifeq ($(ENABLE_VBOOT_MOTA_SUPPORT),1)
+DEFINES += VBOOT_MOTA=1
+else
 ENABLE_SECAPP_LOADER := 1
 ENABLE_RPMB_SUPPORT := 1
 #enable fbcon display menu
 ENABLE_FBCON_DISPLAY_MSG := 1
 endif
+endif