drm/xe/xe2lpm: Add permanent Wa_14020756599

For xe2_lpm Wa_14020756599 is applied to all steppings and
when RCS is present on graphics GT.

V5(MattR):
  - Add more comments about new API
V4:
  - Make it part of lrc wa
  - Check for RCS as rtp rule
V3(MattR):
  - Rename rtp api name
  - Use MEDIA_VERx100
V2:
  - Remove engine filter video decode
  - Fix typo GRAPHICS/MEDIA/s - Himal

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240603104951.705603-2-tejas.upadhyay@intel.com