drm/i915/bmg: Lane reversal requires writes to both context lanes

drm/i915/bmg: Lane reversal requires writes to both context lanes

Write both CX0 Lanes for Context Toggle for all except TC pin assignment D.

v2: Update title(RK)
Bspec: 64539
CC: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240430172850.1881525-2-radhakrishna.sripada@intel.com