misc: replace strict_strtoul() with kstrtoul()

The usage of strict_strtoul() is not preferred, because
strict_strtoul() is obsolete. Thus, kstrtoul() should be
used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/ti_dac7512.c b/drivers/misc/ti_dac7512.c
index 1d86407..9b23722 100644
--- a/drivers/misc/ti_dac7512.c
+++ b/drivers/misc/ti_dac7512.c
@@ -33,9 +33,11 @@
 	struct spi_device *spi = to_spi_device(dev);
 	unsigned char tmp[2];
 	unsigned long val;
+	int ret;
 
-	if (strict_strtoul(buf, 10, &val) < 0)
-		return -EINVAL;
+	ret = kstrtoul(buf, 10, &val);
+	if (ret)
+		return ret;
 
 	tmp[0] = val >> 8;
 	tmp[1] = val & 0xff;