serial: xilinx_uartps: Drop unused include

This driver includes the legacy header <linux/gpio.h> but does
not use any symbols from it. Drop the inclusion.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260320220827.3237499-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: andy-shev

drivers/tty/serial/xilinx_uartps.c

@@ -22,7 +22,6 @@
 #include <linux/of.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
-#include <linux/gpio.h>
 #include <linux/gpio/consumer.h>
 #include <linux/delay.h>
 #include <linux/reset.h>