disp: msm: dp: drm_dp_calc_pbn_mode includes dsc enable/disable bool

Commit dc48529fb14e ("drm/dp_mst: Add PBN calculation for DSC modes")
adds support for handling fractional bpp values for dsc usecases.
This change sets this to false since the driver uses unadjusted bpp.

Change-Id: I10b4a74fd512c5ffb333f8664effb5efb8ea6c4e
Signed-off-by: Samantha Tran <samtran@codeaurora.org>
Signed-off-by: Nilaan Gunabalachandran <ngunabal@codeaurora.org>

msm/dp/dp_mst_drm.c

@@ -681,7 +681,7 @@ static int dp_mst_calc_pbn_mode(struct dp_display_mode *dp_mode)
 		DSC_BPP(dp_mode->timing.comp_info.dsc_info.config)
 		: dp_mode->timing.bpp;
 
-	pbn = drm_dp_calc_pbn_mode(dp_mode->timing.pixel_clk_khz, bpp);
+	pbn = drm_dp_calc_pbn_mode(dp_mode->timing.pixel_clk_khz, bpp, false);
 	pbn_fp = drm_fixp_from_fraction(pbn, 1);
 
 	DP_DEBUG("before overhead pbn:%d, bpp:%d\n", pbn, bpp);