drm/xe/rtp: Expand max rules/actions per entry

Having at most 4 rules per entry is already reaching the maximum.
Expand it to 6 to allow for more room. With the addition of OR
condition for rules, this will very soon not be sufficient.

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240618050044.324454-3-lucas.demarchi@intel.com