efi_loader: EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL definition

EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.Reset() is a function and not a void *
pointer.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/include/efi_api.h b/include/efi_api.h
index d7d95ed..4de5d20 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -577,7 +577,9 @@
 #define EFI_ATTR_BG(attr)        (((attr) >> 4) & 0x7)
 
 struct efi_simple_text_output_protocol {
-	void *reset;
+	efi_status_t (EFIAPI *reset)(
+			struct efi_simple_text_output_protocol *this,
+			char extended_verification);
 	efi_status_t (EFIAPI *output_string)(
 			struct efi_simple_text_output_protocol *this,
 			const efi_string_t str);