drm/i915/display: Read panel replay source status through PSR2 status register

PTL onwards get panel replay status from PSR2 status register
instead of SRD status.

Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250324100823.3111564-1-animesh.manna@intel.com