gpio: mpc8xxx: add ls1088a platform special function

ls1028a and ls1088a platform share common special function.
The gpio hardware what they use is the same version.
Signed-off-by: Song Hui <hui.song_1@nxp.com>
Link: https://lore.kernel.org/r/20190808101628.36782-3-hui.song_1@nxp.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-mpc8xxx.c

@@ -319,6 +319,7 @@ static const struct of_device_id mpc8xxx_gpio_ids[] = {
 	{ .compatible = "fsl,mpc5125-gpio", .data = &mpc5125_gpio_devtype, },
 	{ .compatible = "fsl,pq3-gpio",     },
 	{ .compatible = "fsl,ls1028a-gpio", .data = &ls1028a_gpio_devtype, },
+	{ .compatible = "fsl,ls1088a-gpio", .data = &ls1028a_gpio_devtype, },
 	{ .compatible = "fsl,qoriq-gpio",   },
 	{}
 };