mfd: vexpress-sysreg: Use devres API variants

Use the managed devm_gpiochip_add_data() and devm_mfd_add_devices()
instead of their unmanaged counterparts. With this, no .remove() hook is
needed for driver unbind.

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>

drivers/mfd/vexpress-sysreg.c

@@ -140,9 +140,9 @@ static int vexpress_sysreg_probe(struct platform_device *pdev)
 	bgpio_init(mmc_gpio_chip, &pdev->dev, 0x4, base + SYS_MCI,
 			NULL, NULL, NULL, NULL, 0);
 	mmc_gpio_chip->ngpio = 2;
-	gpiochip_add_data(mmc_gpio_chip, NULL);
+	devm_gpiochip_add_data(&pdev->dev, mmc_gpio_chip, NULL);
 
-	return mfd_add_devices(&pdev->dev, PLATFORM_DEVID_AUTO,
+	return devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_AUTO,
 			vexpress_sysreg_cells,
 			ARRAY_SIZE(vexpress_sysreg_cells), mem, 0, NULL);
 }