drm/xe: Remove TODO from rtp infra

The function pointer is already present as match_func, inside
struct xe_rtp_rule and handled as so instead of inside rtp_regval as
originally thought out when this was written.
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/xe_rtp_types.h

@@ -24,10 +24,6 @@ enum {
 struct xe_rtp_regval {
 	/** @reg: Register */
 	u32		reg;
-	/*
-	 * TODO: maybe we need a union here with a func pointer for cases
-	 * that are too specific to be generalized
-	 */
 	/** @clr_bits: bits to clear when updating register */
 	u32		clr_bits;
 	/** @set_bits: bits to set when updating register */