Makefile: socfpga_v2.7.1 release

Remove RC from version release and promote to socfpga_v2.7.1

Signed-off-by: Sieu Mun Tang <sieu.mun.tang@intel.com>
Change-Id: If0f06012eb307c5f257915ce34499f20c9dae820

Author: sieumunt

Makefile

@@ -11,7 +11,7 @@ VERSION_MAJOR			:= 2
 VERSION_MINOR			:= 7
 
 # Intel SOCFPGA Release Version
-VERSION_RELEASE			:= 1_rc
+VERSION_RELEASE			:= 1
 
 # Default goal is build all images
 .DEFAULT_GOAL			:= all