Input: navpoint - convert to use GPIO descriptor

The Navpoint driver uses a GPIO line, convert this to use
a GPIO descriptor. There are no in-kernel users but out of tree
users can easily be added or converted using a GPIO descriptor
table as with numerous other drivers.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20231129-descriptors-input-v1-1-9433162914a3@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

include/linux/input/navpoint.h

@@ -5,5 +5,4 @@
 
 struct navpoint_platform_data {
 	int		port;		/* PXA SSP port for pxa_ssp_request() */
-	int		gpio;		/* GPIO for power on/off */
 };