[PATCH 08/21] drm/hisilicon/kirin: Include linux/io.h for readl()/writel()

[Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx>]

From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Include linux/io.h for readl()/writel().

When built on x86_64 w/ COMPILE_TEST=y:
../drivers/gpu/drm/hisilicon/kirin/dw_dsi_reg.h:93:16: error: implicit declaration of function ‘readl’ [-Werror=implicit-function-declaration]
   93 |         orig = readl(addr);
      |                ^~~~~
../drivers/gpu/drm/hisilicon/kirin/dw_dsi_reg.h:96:9: error: implicit declaration of function ‘writel’ [-Werror=implicit-function-declaration]
   96 |         writel(tmp, addr);
      |         ^~~~~~

Cc: Xinliang Liu <xinliang.liu@xxxxxxxxxx>
Cc: Tian Tao <tiantao6@xxxxxxxxxxxxx>
Cc: Xinwei Kong <kong.kongxinwei@xxxxxxxxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Cc: Yongqin Liu <yongqin.liu@xxxxxxxxxx>
Cc: John Stultz <jstultz@xxxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/hisilicon/kirin/dw_dsi_reg.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_dsi_reg.h b/drivers/gpu/drm/hisilicon/kirin/dw_dsi_reg.h
index d79fc031e53d..a87d1135856f 100644
--- a/drivers/gpu/drm/hisilicon/kirin/dw_dsi_reg.h
+++ b/drivers/gpu/drm/hisilicon/kirin/dw_dsi_reg.h
@@ -7,6 +7,8 @@
 #ifndef __DW_DSI_REG_H__
 #define __DW_DSI_REG_H__
 
+#include <linux/io.h>
+
 #define MASK(x)				(BIT(x) - 1)
 
 /*
-- 
2.43.2