Re: [v4,2/6] ipu-v3: Include <linux/io.h>

The code uses readl() and writel(). Include the header file to
get the declarations.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <redacted>
---
  drivers/gpu/ipu-v3/ipu-prv.h | 1 +
  1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/ipu-v3/ipu-prv.h b/drivers/gpu/ipu-v3/ipu-prv.h
index 291ac1bab66d..d4621b1ea7f1 100644
--- a/drivers/gpu/ipu-v3/ipu-prv.h
+++ b/drivers/gpu/ipu-v3/ipu-prv.h

@@ -8,6 +8,7 @@
  
  struct ipu_soc;
  
+#include <linux/io.h>
  #include <linux/types.h>
  #include <linux/device.h>
  #include <linux/clk.h>