efi: Move driver-binding guid to a common file

Move efi_guid_driver_binding_protocol to lib/efi so that it can be used
from the app.

Signed-off-by: Simon Glass <sjg@chromium.org>

lib/efi/device_path.c

@@ -34,6 +34,9 @@ const efi_guid_t efi_file_info_guid = EFI_FILE_INFO_GUID;
 const efi_guid_t efi_u_boot_guid = U_BOOT_GUID;
 /* GUID of the device tree table */
 const efi_guid_t efi_guid_fdt = EFI_FDT_GUID;
+/* GUID of the EFI_DRIVER_BINDING_PROTOCOL */
+const efi_guid_t efi_guid_driver_binding_protocol =
+			EFI_DRIVER_BINDING_PROTOCOL_GUID;
 
 /* template EFI_DP_END node: */
 const struct efi_device_path EFI_DP_END = {