drm/i915/display: Evade scanline 0 as well if PSR1 or PSR2 is enabled

drm/i915/display: Evade scanline 0 as well if PSR1 or PSR2 is enabled

PIPEDSL is reading as 0 when in SRDENT(PSR1) or DEEP_SLEEP(PSR2). On
wake-up scanline counting starts from vblank_start - 1. We don't know if
wake-up is already ongoing when evasion starts. In worst case PIPEDSL could
start reading valid value right after checking the scanline. In this
scenario we wouldn't have enough time to write all registers. To tackle
this evade scanline 0 as well. As a drawback we have 1 frame delay in flip
when waking up.

v2:
  - use intel_dsb_emit_wait_dsl
  - add evasion of scanline 0 also for Panel Replay

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250213064804.2077127-11-jouni.hogander@intel.com