[PATCH] drm: dw-hdmi: Fix compilation breakage by selecting REGMAP_MMIO

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The dw-hdmi driver switched to regmap-mmio, but lacks the dependency in
Kconfig. This can result in compilation breakages. Fix it by selecting
REGMAP_MMIO.

Fixes: 80e2f97968b5 ("drm: bridge: dw-hdmi: Switch to regmap for register access")
Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/bridge/synopsys/Kconfig | 1 +
 1 file changed, 1 insertion(+)

Archit,

This is a v4.12 regression fix. While not super critical, it would be
nice if it could get merged in v4.12.

diff --git a/drivers/gpu/drm/bridge/synopsys/Kconfig b/drivers/gpu/drm/bridge/synopsys/Kconfig
index 40d2827a6d19..53e78d092d18 100644
--- a/drivers/gpu/drm/bridge/synopsys/Kconfig
+++ b/drivers/gpu/drm/bridge/synopsys/Kconfig
@@ -1,6 +1,7 @@
 config DRM_DW_HDMI
 	tristate
 	select DRM_KMS_HELPER
+	select REGMAP_MMIO
 
 config DRM_DW_HDMI_AHB_AUDIO
 	tristate "Synopsys Designware AHB Audio interface"
-- 
Regards,

Laurent Pinchart

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