drm/i915/vdsc: Set VDSC PIC_HEIGHT before using for DP DSC

Currently, pic_height of vdsc_cfg structure is being used to calculate
slice_height, before it is set for DP.

So taking out the lines to set pic_height from the helper
intel_dp_dsc_compute_params() to individual encoders, and setting
pic_height, before it is used to calculate slice_height for DP.

Fixes: 5a6d866f ("drm/i915: Get slice height before computing rc params")
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220902103219.1168781-1-ankit.k.nautiyal@intel.com

drivers/gpu/drm/i915/display/icl_dsi.c

@@ -1630,6 +1630,8 @@ static int gen11_dsi_dsc_compute_config(struct intel_encoder *encoder,
 	/* FIXME: initialize from VBT */
 	vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST;
 
+	vdsc_cfg->pic_height = crtc_state->hw.adjusted_mode.crtc_vdisplay;
+
 	ret = intel_dsc_compute_params(crtc_state);
 	if (ret)
 		return ret;

drivers/gpu/drm/i915/display/intel_dp.c

@@ -1391,6 +1391,7 @@ static int intel_dp_dsc_compute_params(struct intel_encoder *encoder,
 	 * DP_DSC_RC_BUF_SIZE for this.
 	 */
 	vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST;
+	vdsc_cfg->pic_height = crtc_state->hw.adjusted_mode.crtc_vdisplay;
 
 	/*
 	 * Slice Height of 8 works for all currently available panels. So start

drivers/gpu/drm/i915/display/intel_vdsc.c

@@ -460,7 +460,6 @@ int intel_dsc_compute_params(struct intel_crtc_state *pipe_config)
 	u8 i = 0;
 
 	vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay;
-	vdsc_cfg->pic_height = pipe_config->hw.adjusted_mode.crtc_vdisplay;
 	vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width,
 					     pipe_config->dsc.slice_count);