m68k: Remove M52277EVB board

This board has not been converted to CONFIG_DM_MMC by the deadline.
Remove it.  As this is also the last in family remove the related
support as well.

Cc: Angelo Durgehello <angelo.dureghello@timesys.com>
Cc: TsiChung Liew <Tsi-Chung.Liew@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h
index 1c04d6d..ceb462f 100644
--- a/arch/m68k/include/asm/cache.h
+++ b/arch/m68k/include/asm/cache.h
@@ -10,7 +10,7 @@
 #define __CACHE_H
 
 #if defined(CONFIG_MCF520x) || defined(CONFIG_MCF523x) || \
-    defined(CONFIG_MCF52x2) || defined(CONFIG_MCF5227x)
+    defined(CONFIG_MCF52x2)
 #define CONFIG_CF_V2
 #endif