[PATCH] gpiolib: of: Only compile in MT2701 quirk when it is needed.

[Daniel Palmer <daniel@thingy.jp>]

The compiler cannot workout if this is actually needed or not
so machines that will never need this code also get it.

For example:
m68k-linux-gnu-nm vmlinux | grep mt27
00135742 t of_find_mt2701_gpio

Add some ugly ifdef'ery to get rid of it.

Signed-off-by: Daniel Palmer <daniel@thingy.jp>
---
 drivers/gpio/gpiolib-of.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 8657379e9165..ef1ac68b94b7 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -634,6 +634,7 @@ static struct gpio_desc *of_find_gpio_rename(struct device_node *np,
 	return ERR_PTR(-ENOENT);
 }
 
+#if IS_ENABLED(CONFIG_SND_SOC_MT2701_CS42448)
 static struct gpio_desc *of_find_mt2701_gpio(struct device_node *np,
 					     const char *con_id,
 					     unsigned int idx,
@@ -665,6 +666,7 @@ static struct gpio_desc *of_find_mt2701_gpio(struct device_node *np,
 
 	return desc;
 }
+#endif
 
 /*
  * Trigger sources are special, they allow us to use any GPIO as a LED trigger
@@ -699,7 +701,9 @@ typedef struct gpio_desc *(*of_find_gpio_quirk)(struct device_node *np,
 						enum of_gpio_flags *of_flags);
 static const of_find_gpio_quirk of_find_gpio_quirks[] = {
 	of_find_gpio_rename,
+#if IS_ENABLED(CONFIG_SND_SOC_MT2701_CS42448)
 	of_find_mt2701_gpio,
+#endif
 	of_find_trigger_gpio,
 	NULL
 };
-- 
2.51.0