drm/msm/disp/dpu1: add vsync and underrun irqs for INTF_5

INTF_5 is used by EDP panel in SC7280 target. Add vsync
and underrun irqs needed by INTF_5 to dpu irq map.

Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>
Link: https://lore.kernel.org/r/1617688895-26275-3-git-send-email-mkrishn@codeaurora.org


Signed-off-by: Rob Clark <robdclark@chromium.org>