drm/msm/dsi: Add DATABUS_WIDEN MDP_CTRL2 bit

Add a DATABUS_WIDEN bit to the MDP_CTRL2 register to allow DSI to enable
databus widen mode.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/553757/
Link: https://lore.kernel.org/r/20230822-add-widebus-support-v4-3-9dc86083d6ea@quicinc.comSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/msm/dsi/dsi.xml.h

@@ -664,6 +664,7 @@ static inline uint32_t DSI_CMD_MODE_MDP_CTRL2_INPUT_RGB_SWAP(enum dsi_rgb_swap v
 	return ((val) << DSI_CMD_MODE_MDP_CTRL2_INPUT_RGB_SWAP__SHIFT) & DSI_CMD_MODE_MDP_CTRL2_INPUT_RGB_SWAP__MASK;
 }
 #define DSI_CMD_MODE_MDP_CTRL2_BURST_MODE			0x00010000
+#define DSI_CMD_MODE_MDP_CTRL2_DATABUS_WIDEN			0x00100000
 
 #define REG_DSI_CMD_MODE_MDP_STREAM2_CTRL			0x000001b8
 #define DSI_CMD_MODE_MDP_STREAM2_CTRL_DATA_TYPE__MASK		0x0000003f