[PATCH] drivers: staging: android: ion: ion_dummy_driver: include "linux/io.h"

[Chen Gang <gang.chen.5i5j@xxxxxxxxx>]

Need add "linux/io.h" to pass compiling under metag architecture with
allmodconfig (which use the default 'virt_to_phys'), the related error:

    CC      drivers/staging/android/ion/ion_dummy_driver.o
  drivers/staging/android/ion/ion_dummy_driver.c: In function 'ion_dummy_init':
  drivers/staging/android/ion/ion_dummy_driver.c:81: error: implicit declaration of function 'virt_to_phys'

Signed-off-by: Chen Gang <gang.chen.5i5j@xxxxxxxxx>
---
 drivers/staging/android/ion/ion_dummy_driver.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/android/ion/ion_dummy_driver.c b/drivers/staging/android/ion/ion_dummy_driver.c
index 55b2002..3854df7 100644
--- a/drivers/staging/android/ion/ion_dummy_driver.c
+++ b/drivers/staging/android/ion/ion_dummy_driver.c
@@ -20,6 +20,7 @@
 #include <linux/bootmem.h>
 #include <linux/memblock.h>
 #include <linux/sizes.h>
+#include <linux/io.h>
 #include "ion.h"
 #include "ion_priv.h"
 
-- 
1.7.11.7
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