drm/msm/dsi: Update incorrect DSC V1.1 8bpp 8bpc min qp values

The DSC V1.1 8bpp 8bpc encoding min qp values were changed
incorrectly due to a typo on the DSC v1.1 SCR. Update min qp
values for this encoding type to correctly align with the PPS
guidance in the DSC V1.1 standard.

Change-Id: I22989d17f1f87bb308ccecd72aa07044f37e48a3
Signed-off-by: Christopher Braga <cbraga@codeaurora.org>