bootfs: make sure deploy dir exists before using it

Change-Id: I70c8b9d41c3c67b83cf2b4200803c9d71ce93d52
Reviewed-by: aavit <eirik.aavitsland@theqtcompany.com>

classes/bootfs-image.bbclass

@@ -42,6 +42,7 @@ fakeroot do_bootfs () {
     cd ${S}/bootfs
     rm -f ${DEPLOY_DIR_IMAGE}/${BOOTFS_NAME}.tar.gz ${DEPLOY_DIR_IMAGE}/${BOOTFS_LINK_NAME}.tar.gz
 
+    mkdir -p ${DEPLOY_DIR_IMAGE}
     tar czvf ${DEPLOY_DIR_IMAGE}/${BOOTFS_NAME}.tar.gz .
     ln -s ${BOOTFS_NAME}.tar.gz ${DEPLOY_DIR_IMAGE}/${BOOTFS_LINK_NAME}.tar.gz
 }