Revert "drm/i915/psr: Disable early transport by default"

This reverts commit f3c2031d.

We want to notice possible issues faced with PSR2 Region Early Transport as
early as possible -> let's revert patch disabling Region Early Transport by
default. Also eDP 1.5 Panel Replay requires Early Transport.
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240618053026.3268759-9-jouni.hogander@intel.com

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

@@ -3110,9 +3110,6 @@ void intel_psr_init(struct intel_dp *intel_dp)
 	else
 		intel_dp->psr.source_support = true;
 
-	/* Disable early transport for now */
-	intel_dp->psr.debug |= I915_PSR_DEBUG_SU_REGION_ET_DISABLE;
-
 	/* Set link_standby x link_off defaults */
 	if (DISPLAY_VER(dev_priv) < 12)
 		/* For new platforms up to TGL let's respect VBT back again */