efi_loader: move EFI_LOAD_FILE2_PROTOCOL_GUID

The EFI_LOAD_FILE_PROTOCOL_GUID and EFI_LOAD_FILE2_PROTOCOL_GUID are needed
to complement the implementation of the LoadFile() boot service.

Remove a duplicate declaration of a variable for the
EFI_LOAD_FILE2_PROTOCOL_GUID.
Move the remaining declaration to efi_boottime.c.
Add a variable for the EFI_LOAD_FILE_PROTOCOL_GUID.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 76cd2b3..4c6eb86 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -195,6 +195,9 @@
 extern const efi_guid_t efi_guid_device_path_utilities_protocol;
 /* GUID of the deprecated Unicode collation protocol */
 extern const efi_guid_t efi_guid_unicode_collation_protocol;
+/* GUIDs of the Load File and Load File2 protocol */
+extern const efi_guid_t efi_guid_load_file_protocol;
+extern const efi_guid_t efi_guid_load_file2_protocol;
 /* GUID of the Unicode collation protocol */
 extern const efi_guid_t efi_guid_unicode_collation_protocol2;
 extern const efi_guid_t efi_guid_hii_config_routing_protocol;