iio: adc: stm32-dfsdm: fill module aliases

When STM32 DFSDM driver is built as module, no modalias information
is available. This prevents module to be loaded by udev.
Add MODULE_DEVICE_TABLE() to fill module aliases.

Fixes: e2e6771c6462 ("IIO: ADC: add STM32 DFSDM sigma delta ADC support")
Signed-off-by: Olivier Moysan <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/adc/stm32-dfsdm-adc.c

···
 	},
 	{}
 };
+MODULE_DEVICE_TABLE(of, stm32_dfsdm_adc_match);
 
 static int stm32_dfsdm_adc_probe(struct platform_device *pdev)
 {