add missing kernel configuration symbol (#5564)

SVN-Revision: 16961

target/linux/orion/config-default

@@ -156,6 +156,7 @@ CONFIG_MEDIA_TUNER_XC2028=m
 CONFIG_MEDIA_TUNER_XC5000=m
 # CONFIG_MINIX_FS is not set
 # CONFIG_MMC_TEST is not set
+# CONFIG_MMC_MVSDIO is not set
 CONFIG_MTD_PHYSMAP=y
 CONFIG_MTD_PHYSMAP_BANKWIDTH=1
 CONFIG_MTD_PHYSMAP_LEN=0