Move most CONFIG_HAVE_BLOCK_DEVICE to Kconfig

config_fallbacks.h has some logic that sets HAVE_BLOCK_DEVICE
based on a list of enabled options.  Moving HAVE_BLOCK_DEVICE to
Kconfig allows us to drastically shrink the logic in
config_fallbacks.h

Signed-off-by: Adam Ford <aford173@gmail.com>
[trini: Rename HAVE_BLOCK_DEVICE to CONFIG_BLOCK_DEVICE]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index 5461833..83d75c4 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -7,6 +7,7 @@
 	depends on !EFI_STUB || !X86 || X86_64 || EFI_STUB_32BIT
 	default y
 	select LIB_UUID
+	select HAVE_BLOCK_DEVICE
 	help
 	  Select this option if you want to run EFI applications (like grub2)
 	  on top of U-Boot. If this option is enabled, U-Boot will expose EFI