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 <a...@arndb.de>
---
 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.zu...@towertech.it>");
 MODULE_DESCRIPTION("ixp4xx beeper driver");
-- 
2.20.0

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