[PATCH] gpio: merrifield: Fix build err without CONFIG_ACPI

[Yue Haibing]

From: YueHaibing <yuehaib...@huawei.com>

When building CONFIG_ACPI is not set
gcc warn this:

drivers/gpio/gpio-merrifield.c: In function mrfld_gpio_get_pinctrl_dev_name:
drivers/gpio/gpio-merrifield.c:388:19: error: dereferencing pointer to 
incomplete type struct acpi_device
   put_device(&adev->dev);
                   ^
Reported-by: Hulk Robot <hul...@huawei.com>
Fixes:d00d2109c367 ("gpio: merrifield: Convert to use 
acpi_dev_get_first_match_dev()")
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 drivers/gpio/gpio-merrifield.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpio/gpio-merrifield.c b/drivers/gpio/gpio-merrifield.c
index 2383dc7..78ac32f 100644
--- a/drivers/gpio/gpio-merrifield.c
+++ b/drivers/gpio/gpio-merrifield.c
@@ -379,17 +379,18 @@ static void mrfld_irq_init_hw(struct mrfld_gpio *priv)
 
 static const char *mrfld_gpio_get_pinctrl_dev_name(struct mrfld_gpio *priv)
 {
-       struct acpi_device *adev;
        const char *name;
+#ifdef CONFIG_ACPI
+       struct acpi_device *adev;
 
        adev = acpi_dev_get_first_match_dev("INTC1002", NULL, -1);
        if (adev) {
                name = devm_kstrdup(priv->dev, acpi_dev_name(adev), GFP_KERNEL);
                put_device(&adev->dev);
-       } else {
-               name = "pinctrl-merrifield";
        }
-
+#else
+       name = "pinctrl-merrifield";
+#endif
        return name;
 }
 
-- 
2.7.4