Merge tag 'signed-efi-next' of git://github.com/agraf/u-boot

Patch queue for efi - 2018-01-23

This time around we have a lot of EFI patches from Heinrich.
Highlights are:

  - Allow EFI applications to register as drivers
  - Allow exposure of U-Boot block devices from an EFI payload
  - Compatibility improvements

include/config_fallbacks.h

@@ -39,6 +39,7 @@
 	defined(CONFIG_MMC) || \
 	defined(CONFIG_NVME) || \
 	defined(CONFIG_SYSTEMACE) || \
+	(defined(CONFIG_EFI_LOADER) && !defined(CONFIG_SPL_BUILD)) || \
 	defined(CONFIG_SANDBOX)
 #define HAVE_BLOCK_DEVICE
 #endif