add: --no-swap option

from: https://groups.google.com/d/msg/beagleboard/KdcMGFJKvuc/PPN0xgw0VXQJ

Reported-by: David Lambert <dave@lambsys.com>
Signed-off-by: Robert Nelson <robertcnelson@gmail.com>

mk_mmc.sh

@@ -909,10 +909,21 @@ finish_installing_device () {
 }
 
 setup_parition_recipe () {
+	#This (so far) has been leaving the first Partition Alone...
+	if [ "x${no_swap}" = "xenabled" ] ;
+	cat > ${TEMPDIR}/initrd-tree/partition_recipe <<-__EOF__
+		        500 1000 -1 ext4
+		                method{ format } format{ }
+		                use_filesystem{ } filesystem{ ext4 }
+		                mountpoint{ / } label{ rootfs }
+		                options/noatime{ noatime } .
+
+	__EOF__
+	else
 		if [ ! "${conf_swapsize_mb}" ] ; then
 			conf_swapsize_mb=1024
 		fi
-	#This (so far) has been leaving the first Partition Alone...
+		
 		cat > ${TEMPDIR}/initrd-tree/partition_recipe <<-__EOF__
 			        500 1000 -1 ext4
 			                method{ format } format{ }
@@ -925,6 +936,7 @@ setup_parition_recipe () {
 			                format{ } .
 
 		__EOF__
+	fi
 }
 
 initrd_preseed_settings () {
@@ -1664,6 +1676,9 @@ while [ ! -z "$1" ] ; do
 		check_root
 		check_mmc
 		;;
+	--no-swap)
+		no_swap="enabled"
+		;;
 	--uboot)
 		checkparm $2
 		UBOOT_TYPE="$2"