gpio: rzg2l: Drop <common.h>

In line with changes elsewhere, drop inclusion of the common header.

Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
diff --git a/drivers/gpio/rzg2l-gpio.c b/drivers/gpio/rzg2l-gpio.c
index 7c908d0..2477af7 100644
--- a/drivers/gpio/rzg2l-gpio.c
+++ b/drivers/gpio/rzg2l-gpio.c
@@ -5,7 +5,6 @@
  * Copyright (C) 2021-2023 Renesas Electronics Corp.
  */
 
-#include <common.h>
 #include <asm-generic/gpio.h>
 #include <asm/io.h>
 #include <dm/device.h>