Add sdcard device support

built in sd card readers are called /dev/mmcblk* which was not
supported. This patch fixes that issue.

Signed-of-By: Rick Farina <sidhayn@gmail.com>

defaults/initrd.scripts

@@ -88,7 +88,7 @@ findmediamount() {
 				# don't skip device mapper devices. Even the craziest scenario
 				# deserves a fair chance.
 				#
-				for part in `ls /sys/block/${bsn}/${bsn}[0-9]* 2>/dev/null`
+				for part in `ls /sys/block/${bsn}/${bsn}*[0-9]* 2>/dev/null`
 				do
 					skip=1
 					break;
@@ -143,6 +143,8 @@ devicelist(){
 	DEVICES="$DEVICES /dev/ubd* /dev/ubd/*"
 	# iSeries devices
 	DEVICES="$DEVICES /dev/iseries/vcd*"
+	# builtin mmc/sd card reader devices
+	DEVICES="$DEVICES /dev/mmcblk* /dev/mmcblk*/*"
 	echo ${DEVICES}
 }