serial: pic32_uart: Replace of_gpio.h by proper one

of_gpio.h is deprecated and subject to remove.
The driver doesn't use it directly, replace it
with what is really being used.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240307114243.3642832-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/pic32_uart.c

@@ -8,11 +8,11 @@
  *   Sorin-Andrei Pistirica <andrei.pistirica@microchip.com>
  */
 
+#include <linux/gpio/consumer.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
-#include <linux/of_gpio.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/slab.h>