drm/msm/dpu: Add newlines to printks

Add some missing newlines to the various DRM printks in this file.
Noticed while looking at logs. While we're here unbreak quoted
strings so grepping them is easier.

Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210708065619.999199-1-swboyd@chromium.org


Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>