km/common: enable cramfs and cramfs cmdline

All the km boards uses CRAMFS images where the kernel is stored.
This isn't architecture specific because we use it on ARM and
POWERPC.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Heiko Schocher <hs@denx.de>
cc: Wolfgang Denk <wd@denx.de>

include/configs/km/keymile-common.h

@@ -118,7 +118,9 @@
 #define CONFIG_MTD_DEVICE
 #define CONFIG_MTD_CONCAT
 
-/* common powerpc specific env settings */
+#define CONFIG_CMD_CRAMFS
+#define CONFIG_CRAMFS_CMDLINE
+
 #ifndef CONFIG_KM_DEF_ENV_BOOTPARAMS
 #define CONFIG_KM_DEF_ENV_BOOTPARAMS \
 	"actual_bank=0\0"