efi_loader: imply FAT, FAT_WRITE

The UEFI spec requires support for the FAT file system.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index aad37b7..6c9df3a 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -15,6 +15,8 @@
 	select HAVE_BLOCK_DEVICE
 	select REGEX
 	imply CFB_CONSOLE_ANSI
+	imply FAT
+	imply FAT_WRITE
 	imply USB_KEYBOARD_FN_KEYS
 	imply VIDEO_ANSI
 	help