efi_loader: EFI_DEVICE_PATH_UTILITIES_PROTOCOL configurable

Allow the EFI_DEVICE_PATH_UTILITIES_PROTOCOL to be disabled via
configuration.

On systems that are very tight on U-Boot image size we may want to disable
the protocol. As it is required to run the UEFI Shell enable it by default.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_root_node.c b/lib/efi_loader/efi_root_node.c
index 8383fce..bfa57c9 100644
--- a/lib/efi_loader/efi_root_node.c
+++ b/lib/efi_loader/efi_root_node.c
@@ -58,9 +58,11 @@
 			 &efi_guid_device_path_to_text_protocol,
 			 (void *)&efi_device_path_to_text,
 #endif
+#ifdef CONFIG_EFI_DEVICE_PATH_UTIL
 			 /* Device path utilities protocol */
 			 &efi_guid_device_path_utilities_protocol,
 			 (void *)&efi_device_path_utilities,
+#endif
 #ifdef CONFIG_EFI_DT_FIXUP
 			 /* Device-tree fix-up protocol */
 			 &efi_guid_dt_fixup_protocol,