ColdFire: Add M5253DEMO platform support for MCF5253

Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
diff --git a/Makefile b/Makefile
index a384d16..d802b03 100644
--- a/Makefile
+++ b/Makefile
@@ -1851,6 +1851,9 @@
 M5249EVB_config :		unconfig
 	@$(MKCONFIG) $(@:_config=) m68k mcf52x2 m5249evb freescale
 
+M5253DEMO_config :		unconfig
+	@$(MKCONFIG) $(@:_config=) m68k mcf52x2 m5253demo freescale
+
 M5253EVBE_config :		unconfig
 	@$(MKCONFIG) $(@:_config=) m68k mcf52x2 m5253evbe freescale