efi_loader: remove EFI_HII_CONFIG_ROUTING_PROTOCOL

Our implementation of the EFI_HII_CONFIG_ROUTING_PROTOCOL is a mere stub,
where all services return an error code. The protocol is neither needed for
the EFI shell nor for the UEFI SCT. To reduce the code size remove it from
the U-Boot binary.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

lib/efi_loader/Makefile

@@ -30,7 +30,7 @@ obj-y += efi_device_path.o
 obj-$(CONFIG_EFI_DEVICE_PATH_TO_TEXT) += efi_device_path_to_text.o
 obj-y += efi_device_path_utilities.o
 obj-y += efi_file.o
-obj-$(CONFIG_EFI_LOADER_HII) += efi_hii.o efi_hii_config.o
+obj-$(CONFIG_EFI_LOADER_HII) += efi_hii.o
 obj-y += efi_image_loader.o
 obj-y += efi_memory.o
 obj-y += efi_root_node.o

lib/efi_loader/efi_hii_config.c

@@ -1,9 +1,13 @@
 // SPDX-License-Identifier:     GPL-2.0+
 /*
- *  EFI Human Interface Infrastructure ... Configuration
+ * EFI Human Interface Infrastructure ... Configuration
  *
- *  Copyright (c) 2017 Leif Lindholm
- *  Copyright (c) 2018 AKASHI Takahiro, Linaro Limited
+ * Copyright (c) 2017 Leif Lindholm
+ * Copyright (c) 2018 AKASHI Takahiro, Linaro Limited
+ *
+ * As this is still a non-working stub and the protocol is neither required
+ * by the EFI shell nor by the UEFI SCT this module has been removed from
+ * the Makefile.
  */
 
 #include <common.h>

lib/efi_loader/efi_root_node.c

@@ -77,9 +77,6 @@ efi_status_t efi_root_node_register(void)
 			 /* HII database protocol */
 			 &efi_guid_hii_database_protocol,
 			 (void *)&efi_hii_database,
-			 /* HII configuration routing protocol */
-			 &efi_guid_hii_config_routing_protocol,
-			 (void *)&efi_hii_config_routing,
 #endif
 			 NULL));
 	efi_root->type = EFI_OBJECT_TYPE_U_BOOT_FIRMWARE;