mkboot.bbclass: fill in actual kernel and ramdisk size on demand

classes/mkboot.bbclass

@@ -11,7 +11,9 @@ do_compile_append() {
     cd ${B}
     cp ${WORKDIR}/img_info .
     sed -i "s@%%KERNEL%%@${B}/${KERNEL_OUTPUT}@" img_info
+    sed -i "s@%%KERNEL_SIZE%%@$(stat --printf="%s" ${B}/${KERNEL_OUTPUT})@" img_info
     sed -i "s@%%RAMDISK%%@${DEPLOY_DIR_IMAGE}/initramfs-android-image-${MACHINE}.cpio.gz@" img_info
+    sed -i "s@%%RAMDISK_SIZE%%@$(stat --printf="%s" ${DEPLOY_DIR_IMAGE}/initramfs-android-image-${MACHINE}.cpio.gz)@" img_info
     mkboot . boot.img || { echo "mkboot failed"; exit 1; }
 }