obmc-phosphor-debug-tarball: yocto2.2 var name change

DEPLOY_DIR_IMAGE has been replaced by IMGDEPLOYDIR in
the latest yocto version.

Change-Id: Id89dd8f03e9d97509adea88ad06a84193e92002e
Signed-off-by: Saqib Khan <khansa@us.ibm.com>
diff --git a/meta-phosphor/classes/obmc-phosphor-debug-tarball.bbclass b/meta-phosphor/classes/obmc-phosphor-debug-tarball.bbclass
index 7cc407f..0e5dbd2 100644
--- a/meta-phosphor/classes/obmc-phosphor-debug-tarball.bbclass
+++ b/meta-phosphor/classes/obmc-phosphor-debug-tarball.bbclass
@@ -5,7 +5,7 @@
 IMAGE_INSTALL_append = " busybox packagegroup-obmc-phosphor-debugtools"
 
 # Override from image_types.bbclass to restrict tarball to /usr tree.
-IMAGE_CMD_tar = "${IMAGE_CMD_TAR} -cvf ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.tar -C ${IMAGE_ROOTFS}/usr ."
+IMAGE_CMD_tar = "${IMAGE_CMD_TAR} -cvf ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.tar -C ${IMAGE_ROOTFS}/usr ."
 
 # Remove packages installed by 'extrausers'.
 IMAGE_INSTALL_remove = "base-passwd shadow"