drm/msm/dpu: Add INTF_5 interrupts

SC8180x has the eDP controller wired up to INTF_5, so add the interrupt
register block for this interface to the list.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220215043353.1256754-1-bjorn.andersson@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>