efi_console: use EFIAPI for callback functions

The call to efi_create_event requires notification functions
flagged as EFIAPI.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

lib/efi_loader/efi_console.c

@@ -429,11 +429,12 @@ struct efi_simple_input_interface efi_con_in = {
 
 static struct efi_event *console_timer_event;
 
-static void efi_key_notify(struct efi_event *event, void *context)
+static void EFIAPI efi_key_notify(struct efi_event *event, void *context)
 {
 }
 
-static void efi_console_timer_notify(struct efi_event *event, void *context)
+static void EFIAPI efi_console_timer_notify(struct efi_event *event,
+					    void *context)
 {
 	EFI_ENTRY("%p, %p", event, context);
 	if (tstc())