efi_loader: export efi_convert_pointer()

We need ConvertPointer() to adjust pointers when implementing  runtime
services within U-Boot.

After ExitBootServices() gd is not available anymore. So we should not use
EFI_ENTRY() and EFI_EXIT().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c
index 121e2f6..45baa2f 100644
--- a/lib/efi_loader/efi_runtime.c
+++ b/lib/efi_loader/efi_runtime.c
@@ -496,15 +496,13 @@
  * @address:		pointer to be converted
  * Return:		status code
  */
-static __efi_runtime efi_status_t EFIAPI efi_convert_pointer(
-			efi_uintn_t debug_disposition, void **address)
+__efi_runtime efi_status_t EFIAPI
+efi_convert_pointer(efi_uintn_t debug_disposition, void **address)
 {
 	efi_physical_addr_t addr;
 	efi_uintn_t i;
 	efi_status_t ret = EFI_NOT_FOUND;
 
-	EFI_ENTRY("%zu %p", debug_disposition, address);
-
 	if (!efi_virtmap) {
 		ret = EFI_UNSUPPORTED;
 		goto out;
@@ -533,7 +531,7 @@
 	}
 
 out:
-	return EFI_EXIT(ret);
+	return ret;
 }
 
 static __efi_runtime void efi_relocate_runtime_table(ulong offset)