Release v1.3: Update minor version number to 3

Change-Id: I05991543d28e70b67be600b714990af6a8d7ba29
diff --git a/Makefile b/Makefile
index 2b630b3..16f920c 100644
--- a/Makefile
+++ b/Makefile
@@ -32,7 +32,7 @@
 # Trusted Firmware Version
 #
 VERSION_MAJOR			:= 1
-VERSION_MINOR			:= 2
+VERSION_MINOR			:= 3
 
 # Default goal is build all images
 .DEFAULT_GOAL			:= all