[PATCH] regulator: bd71837: add <linux/of.h> to fix build errors

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Fix build error due to missing header file:

drivers/regulator/bd71837-regulator.c:242:3: error: implicit declaration of function 'of_match_ptr' [-Werror=implicit-function-declaration]

Fixes: ba08799e90b5 ("regulator: bd71837: BD71837 PMIC regulator driver")

Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx>
Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
---
 drivers/regulator/bd71837-regulator.c |    1 +
 1 file changed, 1 insertion(+)

--- lnx-419.orig/drivers/regulator/bd71837-regulator.c
+++ lnx-419/drivers/regulator/bd71837-regulator.c
@@ -9,6 +9,7 @@
 #include <linux/kernel.h>
 #include <linux/mfd/rohm-bd718x7.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>