efi_loader: specify UEFI spec revision

Both in the boot and the runtime services tables we have to specify the
UEFI spec revision. The same value is already used for the system
table. So let's use a common constant.

In the boot services table we have to provide the header signature.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c
index dd3ff8a..cfa60b8 100644
--- a/lib/efi_loader/efi_runtime.c
+++ b/lib/efi_loader/efi_runtime.c
@@ -459,7 +459,7 @@
 struct efi_runtime_services __efi_runtime_data efi_runtime_services = {
 	.hdr = {
 		.signature = EFI_RUNTIME_SERVICES_SIGNATURE,
-		.revision = EFI_RUNTIME_SERVICES_REVISION,
+		.revision = EFI_SPECIFICATION_VERSION,
 		.headersize = sizeof(struct efi_table_hdr),
 	},
 	.get_time = &efi_get_time_boottime,