kernel.bbclass: Optionally create lib dir during deploy

when we have multilib and a 64bit machine and initramfs then image/lib directory will not be created and it will end up with errors like

| DEBUG: Executing python function sstate_task_prefunc
| DEBUG: Python function sstate_task_prefunc finished
| DEBUG: Executing shell function do_deploy
| tar: lib: Cannot stat: No such file or directory
| tar: Exiting with failure status due to previous errors

So in order to overcome this shortcoming lets mkdir -p the lib directory so the modules can be happily installed.

---
 meta/classes/kernel.bbclass |    1 +
 1 file changed, 1 insertion(+)

index f3a5553..8c8c95b 100644
@@ -372,6 +372,7 @@ addtask uboot_mkimage before do_install after do_compile
 kernel_do_deploy() {
 	install -m 0644 ${KERNEL_OUTPUT} ${DEPLOYDIR}/${KERNEL_IMAGE_BASE_NAME}.bin
 	if [ ${MODULE_TARBALL_DEPLOY} = "1" ] && (grep -q -i -e '^CONFIG_MODULES=y$' .config); then
+		mkdir -p ${D}/lib
 		tar -cvzf ${DEPLOYDIR}/${MODULE_TARBALL_BASE_NAME} -C ${D} lib
 		ln -sf ${MODULE_TARBALL_BASE_NAME}.bin ${MODULE_TARBALL_SYMLINK_NAME}
 	fi

1.7.9.5