iio: accel: mma7660: fix missing MODULE_DEVICE_TABLE(i2c)

Add missing MODULE_DEVICE_TABLE(i2c) this fixes autoloading on
devicetree using systems.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/accel/mma7660.c

@@ -251,6 +251,7 @@ static const struct i2c_device_id mma7660_i2c_id[] = {
 	{"mma7660", 0},
 	{}
 };
+MODULE_DEVICE_TABLE(i2c, mma7660_i2c_id);
 
 static const struct acpi_device_id mma7660_acpi_id[] = {
 	{"MMA7660", 0},