feat(tc): specify MHU version based on platform

Platforms older than TC2 contain MHUv2 well as newer platforms contain
MHUv3. Set the Makefile variable accordingly.

Change-Id: I00b83a34908cdbf7d1d9ac39728e3fa6ef449d2c
Signed-off-by: Jackson Cooper-Driver <jackson.cooper-driver@arm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
diff --git a/plat/arm/board/tc/platform.mk b/plat/arm/board/tc/platform.mk
index 37ca4c6..2a1e4d6 100644
--- a/plat/arm/board/tc/platform.mk
+++ b/plat/arm/board/tc/platform.mk
@@ -71,6 +71,13 @@
 # Save DSU PMU registers on cluster off and restore them on cluster on
 PRESERVE_DSU_PMU_REGS		:= 1
 
+# Specify MHU type based on platform
+ifneq ($(filter ${TARGET_PLATFORM}, 2),)
+	PLAT_MHU_VERSION	:= 2
+else
+	PLAT_MHU_VERSION	:= 3
+endif
+
 # Include GICv3 driver files
 include drivers/arm/gic/v3/gicv3.mk