efi_loader: Initial EFI_DEVICE_PATH_UTILITIES_PROTOCOL

Not complete, but enough for Shell.efi and SCT.efi.  We'll implement the
rest as needed or once we have SCT running properly so there is a way to
validate the interface against the conformance test suite.

Initial skeleton written by Leif, and then implementation by Rob.

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
[Fill initial skeleton]
Signed-off-by: Rob Clark <robdclark@gmail.com>
[Rebase on v2018.03-rc1]
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile
index 2a87d9e..d2ce897 100644
--- a/lib/efi_loader/Makefile
+++ b/lib/efi_loader/Makefile
@@ -17,7 +17,8 @@
 obj-$(CONFIG_CMD_BOOTEFI_HELLO) += helloworld_efi.o
 obj-y += efi_image_loader.o efi_boottime.o efi_runtime.o efi_console.o
 obj-y += efi_memory.o efi_device_path_to_text.o efi_device_path.o
-obj-y += efi_file.o efi_variable.o efi_bootmgr.o efi_watchdog.o
+obj-y += efi_device_path_utilities.o efi_file.o efi_variable.o efi_bootmgr.o
+obj-y += efi_watchdog.o
 obj-$(CONFIG_LCD) += efi_gop.o
 obj-$(CONFIG_DM_VIDEO) += efi_gop.o
 obj-$(CONFIG_PARTITIONS) += efi_disk.o