mfd: mt6397: Add mutex include

Add missing mutex.h.

Signed-off-by: Josef Friedl <josef.friedl@speed.at>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/mfd/mt6397/core.h b/include/linux/mfd/mt6397/core.h
index 9320c2a1e3e6..fc88d315bdde 100644
--- a/include/linux/mfd/mt6397/core.h
+++ b/include/linux/mfd/mt6397/core.h
@@ -7,6 +7,8 @@
 #ifndef __MFD_MT6397_CORE_H__
 #define __MFD_MT6397_CORE_H__
 
+#include <linux/mutex.h>
+
 enum chip_id {
         MT6323_CHIP_ID = 0x23,
         MT6391_CHIP_ID = 0x91,