pwm: adp5585: make sure to include mod_devicetable.h

Explicitly include mod_devicetable.h for struct platform_device_id.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20250512-dev-adp5589-fw-v3-22-092b14b79a88@analog.com


Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>