project: msm8996: Enable early mount support in 8996

Enable early mount support for ufs and mmc targets.

Change-Id: Idb8e590476ccf68820ac081bc8f0417b720df054
diff --git a/project/msm8996.mk b/project/msm8996.mk
index 2147ba6..aa9fb8e 100644
--- a/project/msm8996.mk
+++ b/project/msm8996.mk
@@ -142,3 +142,8 @@
 endif
 # Target specific command line
 DEFINES += TARGET_CMDLINE_SUPPORT=1
+
+#Enable early mount support for mmc/ufs
+ifeq ($(ENABLE_BOOTDEVICE_MOUNT),1)
+DEFINES += ENABLE_BOOTDEVICE_MOUNT=1
+endif