efi_loader: fix depends on line of EFI_LOADER

This line is shown as

   depends on (ARM64 ||\302\240ARM) && OF_LIBFDT

on my Emacs.  Use ASCII characters only.

Assuming it is (ARM64 || ARM), remove the redundancy.
Unlike Linux, CONFIG_ARM includes CONFIG_ARM64 in U-Boot.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

lib/efi_loader/Kconfig

 config EFI_LOADER
 	bool "Support running EFI Applications in U-Boot"
-	depends on (ARM64 || ARM) && OF_LIBFDT
+	depends on ARM && OF_LIBFDT
 	default y
 	help
 	  Select this option if you want to run EFI applications (like grub2)