rtc: rv3029: hide unused i2c device table

The added support for SPI mode made it possible to configure the driver
when I2C is disabled, leaving an unused device table:

drivers/rtc/rtc-rv3029c2.c:794:29: error: 'rv3029_id' defined but not used [-Werror=unused-variable]

This moves the table inside of the #ifdef section that has the
only user, to avoid the harmless warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d08f50dd0afc ("rtc: rv3029: Add support of RV3049")
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/rtc/rtc-rv3029c2.c

@@ -791,13 +791,6 @@ static struct rtc_class_ops rv3029_rtc_ops = {
 	.set_time	= rv3029_set_time,
 };
 
-static struct i2c_device_id rv3029_id[] = {
-	{ "rv3029", 0 },
-	{ "rv3029c2", 0 },
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, rv3029_id);
-
 static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq,
 			const char *name)
 {
@@ -875,6 +868,13 @@ static int rv3029_i2c_probe(struct i2c_client *client,
 	return rv3029_probe(&client->dev, regmap, client->irq, client->name);
 }
 
+static struct i2c_device_id rv3029_id[] = {
+	{ "rv3029", 0 },
+	{ "rv3029c2", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, rv3029_id);
+
 static struct i2c_driver rv3029_driver = {
 	.driver = {
 		.name = "rtc-rv3029c2",