Use a different approach to solving the ramdisk-image-create failure.

Change-Id: I2861927d1989bde1137c253c8b3a48b245c65f19

bin/ramdisk-image-create

@@ -56,6 +56,7 @@ for arg do RAMDISK_ELEMENT="$RAMDISK_ELEMENT $arg" ; done
 
 source $_LIB/ramdisk-defaults
 source $_LIB/common-functions
+source $_LIB/img-functions
 source $_LIB/ramdisk-functions
 
 RAMDISK_ELEMENT=$($SCRIPT_HOME/element-info --expand-dependencies $RAMDISK_ELEMENT)

lib/common-functions

@@ -13,8 +13,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-source $(dirname $(readlink -f $BASH_SOURCE))/img-functions
-
 function mk_build_dir () {
   export TMP_BUILD_DIR=$(mktemp -t -d --tmpdir=${TMP_DIR:-/tmp} image.XXXXXXXX)
   [ $? -eq 0 ] || die "Failed to create tmp directory"