Added copy config to boot directory for kernel compiling

eclass/calculate-kernel.eclass

@@ -89,6 +89,8 @@ calculate-kernel_src_compile() {
 		${WORKDIR}/boot/initramfs-${KV_FULL}-installed
 	mv ${WORKDIR}/boot/System.map-${SYSTEM}-*-${CKV_FULL} \
 		${WORKDIR}/boot/System.map-${KV_FULL}-installed
+	cp ${S}/.config ${WORKDIR}/boot/config-${CKV_FULL}-installed
+	cp ${S}/.config ${WORKDIR}/boot/config-${KV_FULL}-installed
 	cp ${WORKDIR}/boot/System.map-${KV_FULL}-installed ${S}/System.map
 	rm ${WORKDIR}/lib/modules/${CKV_FULL}/build
 	rm ${WORKDIR}/lib/modules/${CKV_FULL}/source

eclass/calculate.eclass

@@ -94,7 +94,13 @@ calculate_update_kernel() {
 	update_file ${dir}/initramfs-${kversion} ${dir}/initrd
 	# update System.map
 	update_file ${dir}/System.map-${kversion} ${dir}/System.map
-	ebegin "Trying to optimize initramfs"
+	# update config-{CKV} (CKV 2.6.31, KV 2.6.31.4)
+	make_old_file ${dir}/config-${CKV_FULL}
+	cp ${dir}/config-${CKV_FULL}-installed ${dir}/config-${CKV_FULL}
+	# update config-{KV}
+	make_old_file ${dir}/config-${KV_FULL}
+	cp ${dir}/config-${KV_FULL}-installed ${dir}/config-${KV_FULL}
+	kbegin "Trying to optimize initramfs"
 	( which calculate &>/dev/null && calculate --initrd ) && eend 0 || eend 1
 }