drivers/gpio: Fix drivers who are implicit users of module.h
A pending cleanup will mean that module.h won't be implicitly
everywhere anymore. Make sure the modular drivers in gpio
are actually calling out for <module.h> explicitly in advance.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c
index 7369fdd..3e1f1ec 100644
--- a/drivers/gpio/gpio-pcf857x.c
+++ b/drivers/gpio/gpio-pcf857x.c
@@ -23,6 +23,7 @@
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c/pcf857x.h>
+#include <linux/module.h>
static const struct i2c_device_id pcf857x_id[] = {