drm/i915: Remove dead DKL_TX_LOADGEN_SHARING_PMD_DISABLE stuff

DKL_TX_LOADGEN_SHARING_PMD_DISABLE doesn't even seem to exist,
also the spec says to skip all loadgen stuff.

The code was dead anyway since it wasn't actually writing the value
anywhere.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211006204937.30774-6-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

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

@@ -1309,14 +1309,6 @@ static void tgl_dkl_phy_set_signal_levels(struct intel_encoder *encoder,
 		val = intel_de_read(dev_priv, DKL_TX_DPCNTL2(tc_port));
 		val &= ~DKL_TX_DP20BITMODE;
 		intel_de_write(dev_priv, DKL_TX_DPCNTL2(tc_port), val);
-
-		if ((intel_crtc_has_dp_encoder(crtc_state) &&
-		     crtc_state->port_clock == 162000) ||
-		    (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) &&
-		     crtc_state->port_clock == 594000))
-			val |= DKL_TX_LOADGEN_SHARING_PMD_DISABLE;
-		else
-			val &= ~DKL_TX_LOADGEN_SHARING_PMD_DISABLE;
 	}
 }
 

drivers/gpu/drm/i915/i915_reg.h

@@ -11024,7 +11024,6 @@ enum skl_power_gate {
 						     _DKL_TX_DPCNTL1)
 
 #define _DKL_TX_DPCNTL2				0x2C8
-#define  DKL_TX_LOADGEN_SHARING_PMD_DISABLE            REG_BIT(12)
 #define  DKL_TX_DP20BITMODE				(1 << 2)
 #define DKL_TX_DPCNTL2(tc_port) _MMIO(_PORT(tc_port, \
 						     _DKL_PHY1_BASE, \