just copy and bevore delete but dont delete after so the sablink dir will stay in source tree

eclass/nas-kernel.eclass

@@ -422,12 +422,12 @@ _kernel_copy_config() {
 			cp "${FILESDIR}/${PF/-r0/}-${ARCH}.config" "${1}" || die "cannot copy kernel config"
 		else
 			if [ -n "${K_NASCONFIGS_VER}" ]; then
+				rm -rf "${S}/sablink"
 				cp -rf "${WORKDIR}"/sablink "${S}"
 				pushd "${S}"
 				sablink/scripts/prepareconfig ${K_NASKERNEL_NAME}-${CHOST/-*/}
 				mv .config "${1}.tmp"
 				mv "${1}.tmp" "${1}"
-				rm -rf "${S}/sablink"
 				popd
 			else
 				cp "${DISTDIR}/${K_NASKERNEL_CONFIG_FILE}" "${1}" || die "cannot copy kernel config"