dt-bindings: iio: adc: at91-sama5d2: update maintainers entry

Update the maintainers entry to match the changes made back in
mid-2020 with 853fa487 ("MAINTAINERS: adc: at91-sama5d2_adc:
remove myself as co-maintainer").
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/6acdb66592baf395a77a431c0cb9a37b0f178097.1643554065.git.nicolas.ferre@microchip.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/adc/atmel,sama5d2-adc.yaml

@@ -7,7 +7,6 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: AT91 SAMA5D2 Analog to Digital Converter (ADC)
 
 maintainers:
-  - Ludovic Desroches <ludovic.desroches@atmel.com>
   - Eugen Hristev <eugen.hristev@microchip.com>
 
 properties: