efi_loader: correct signature of ConvertPointer()

ConvertPointer() must be EFIAPI. The first parameter should be of type
efi_uint_t. Use the same parameter name as the UEFI specification.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/include/efi_api.h b/include/efi_api.h
index 4de5d20..a36ecec 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -242,7 +242,8 @@
 			unsigned long descriptor_size,
 			uint32_t descriptor_version,
 			struct efi_mem_desc *virtmap);
-	efi_status_t (*convert_pointer)(unsigned long dbg, void **address);
+	efi_status_t (EFIAPI *convert_pointer)(
+			efi_uintn_t debug_disposition, void **address);
 	efi_status_t (EFIAPI *get_variable)(u16 *variable_name,
 					    const efi_guid_t *vendor,
 					    u32 *attributes,