Mute CEC IRQ in dw-hdmi driver init

Add muting of the CEC interrupt to initialize_hdmi_rcar_ih_mutes,
which it previously did not have, unlike the original generic
initialize_hdmi_ih_mutes function.

Author: Kato Kazuomi (加藤 一臣) <kato.kazuomi@jp.panasonic.com>
Signed-off-by: Scott Murray <scott.murray@konsulko.com>

---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index cedae37e6d28..b4a29d3954ae 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1906,6 +1906,7 @@ static void initialize_hdmi_rcar_ih_mutes(struct dw_hdmi *hdmi)
 	hdmi_writeb(hdmi, 0x1f, HDMI_IH_MUTE_AS_STAT0);
 	hdmi_writeb(hdmi, 0x3f, HDMI_IH_MUTE_PHY_STAT0);
 	hdmi_writeb(hdmi, 0x03, HDMI_IH_MUTE_I2CM_STAT0);
+	hdmi_writeb(hdmi, 0x7f, HDMI_IH_MUTE_CEC_STAT0);
 	hdmi_writeb(hdmi, 0x0f, HDMI_IH_MUTE_VP_STAT0);
 	hdmi_writeb(hdmi, 0x03, HDMI_IH_MUTE_I2CMPHY_STAT0);
 
