[PATCH] input: ixp4xx-beeper: include linux/io.h

[Arnd Bergmann <arnd@xxxxxxxx>]

asm/io.h may not be included implicitly, causing a rare
randconfig build error:

drivers/input/misc/ixp4xx-beeper.c:48:3: error: implicit declaration of function '__raw_writel' [-Werror,-Wimplicit-function-declaration]
                __raw_writel((count & ~IXP4XX_OST_RELOAD_MASK) | IXP4XX_OST_ENABLE,

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/input/misc/ixp4xx-beeper.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/input/misc/ixp4xx-beeper.c b/drivers/input/misc/ixp4xx-beeper.c
index 764cf21c0aaf..456325f0ea59 100644
--- a/drivers/input/misc/ixp4xx-beeper.c
+++ b/drivers/input/misc/ixp4xx-beeper.c
@@ -17,6 +17,7 @@
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
 #include <linux/gpio.h>
+#include <linux/io.h>
 
 MODULE_AUTHOR("Alessandro Zummo <a.zummo@xxxxxxxxxxxx>");
 MODULE_DESCRIPTION("ixp4xx beeper driver");
-- 
2.20.0