disp: msm: clear dma done interrupt status for slave controller

When Broadcast is enabled, DMA_DONE bit gets set for slave
controller on command transfer completion but it is not
getting cleared. Due to this, DMA transfer failures on slave
controller are not getting caught. This patch add supports for
clearing DMA_DONE for slave controller on every successful
transfer. This also prints error if transfer fails on slave
controller.

Change-Id: I61ce7b2d8be323adc70d888b5a2416afd9ae9fac
Signed-off-by: Harigovindan P <harigovi@codeaurora.org>

msm/dsi/dsi_catalog.h

@@ -128,6 +128,7 @@ void dsi_phy_hw_v4_0_commit_phy_timing(struct dsi_phy_hw *phy,
 
 /* DSI controller common ops */
 u32 dsi_ctrl_hw_cmn_get_interrupt_status(struct dsi_ctrl_hw *ctrl);
+u32 dsi_ctrl_hw_cmn_poll_dma_status(struct dsi_ctrl_hw *ctrl);
 void dsi_ctrl_hw_cmn_clear_interrupt_status(struct dsi_ctrl_hw *ctrl, u32 ints);
 void dsi_ctrl_hw_cmn_enable_status_interrupts(struct dsi_ctrl_hw *ctrl,
 					     u32 ints);