ColdFire: PLATFORM_CPPFLAGS updates for new compiler

Update PLATFORM_CPPFLAGS to accept 4.3.x version of
ColdFire compiler.

Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
diff --git a/cpu/mcf5227x/config.mk b/cpu/mcf5227x/config.mk
index 8d60fd6..8eab49d 100644
--- a/cpu/mcf5227x/config.mk
+++ b/cpu/mcf5227x/config.mk
@@ -24,8 +24,8 @@
 #
 
 PLATFORM_RELFLAGS += -ffixed-d7 -msep-data
-ifeq ($(findstring 4.2,$(shell $(CC) --version)),4.2)
-PLATFORM_CPPFLAGS += -mcpu=5208 -fPIC
+ifneq ($(findstring 4.1,$(shell $(CC) --version)),4.1)
+PLATFORM_CPPFLAGS += -mcpu=52277 -fPIC
 else
 PLATFORM_CPPFLAGS += -m5307 -fPIC
 endif