gpio: crystalcove: Fix implicit declaration of function 'seq_printf' error

drivers/gpio/gpio-crystalcove.c: In function 'crystalcove_gpio_dbg_show':
drivers/gpio/gpio-crystalcove.c:286:3: error: implicit declaration of function 'seq_printf'
   seq_printf(s, " gpio-%-2d %s %s %s %s ctlo=%2x,%s %s %s\n",

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/gpio/gpio-crystalcove.c b/drivers/gpio/gpio-crystalcove.c
index 5a9849943798d1731ff304ff3bac276ec40f5a4b..934462f5bd2224ef872fa4c155fe5998ff47e273 100644 (file)
--- a/drivers/gpio/gpio-crystalcove.c
+++ b/drivers/gpio/gpio-crystalcove.c
@@ -18,6 +18,7 @@
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
+#include <linux/seq_file.h>
 #include <linux/bitops.h>
 #include <linux/regmap.h>
 #include <linux/mfd/intel_soc_pmic.h>