[media] siano: allow compiling it without RC support

Remote controller support should be optional on all drivers.

Make it optional at Siano's driver.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/common/siano/smsir.h b/drivers/media/common/siano/smsir.h
index ae92b3a..69b59b9 100644
--- a/drivers/media/common/siano/smsir.h
+++ b/drivers/media/common/siano/smsir.h
@@ -46,10 +46,19 @@
 	u32 controller;
 };
 
+#ifdef CONFIG_SMS_SIANO_RC
 int sms_ir_init(struct smscore_device_t *coredev);
 void sms_ir_exit(struct smscore_device_t *coredev);
 void sms_ir_event(struct smscore_device_t *coredev,
 			const char *buf, int len);
+#else
+inline static int sms_ir_init(struct smscore_device_t *coredev) {
+	return 0;
+}
+inline static void sms_ir_exit(struct smscore_device_t *coredev) {};
+inline static void sms_ir_event(struct smscore_device_t *coredev,
+			const char *buf, int len) {};
+#endif
 
 #endif /* __SMS_IR_H__ */