Add MAINTAINERS entries for LTC2497 and LTC2496

Update the MAINTAINERS file to include the path for the LTC2497
and LTC2496 devicetree bindings documentation.
Signed-off-by: Ciprian Regus <ciprian.regus@analog.com>
Link: https://lore.kernel.org/r/20220916140922.2506248-4-ciprian.regus@analog.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS

@@ -1319,6 +1319,8 @@ W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/ABI/testing/sysfs-bus-iio-frequency-ad9523
 F:	Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4350
 F:	Documentation/devicetree/bindings/iio/*/adi,*
+F:	Documentation/devicetree/bindings/iio/adc/lltc,ltc2496.yaml
+F:	Documentation/devicetree/bindings/iio/adc/lltc,ltc2497.yaml
 F:	drivers/iio/*/ad*
 F:	drivers/iio/adc/ltc249*
 F:	drivers/iio/amplifiers/hmc425a.c