Add x86-64 UEFI boot firmware

Author: nicholas-opensource

SEED/X86/config.seed

@@ -24,7 +24,7 @@ CONFIG_DEVEL=y
 CONFIG_TARGET_ROOTFS_SQUASHFS=y
 # CONFIG_TARGET_ROOTFS_TARGZ is not set
 # CONFIG_TARGET_ROOTFS_EXT4FS is not set
-# CONFIG_GRUB_EFI_IMAGES is not set
+CONFIG_GRUB_EFI_IMAGES=y
 
 #Basic Components
 CONFIG_PACKAGE_addition-trans-zh=y