drm/i915/xe2lpd: FBC is now supported on all pipes

FBC is no longer limited by pipe: add the defines for pipes B and C that
will be used by platforms supporting FBC on such pipes.

Bspec: 68881, 68904
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230919192128.2045154-3-lucas.demarchi@intel.com

drivers/gpu/drm/i915/display/intel_display_device.c

@@ -761,6 +761,10 @@ static const struct intel_display_device_info xe_lpdp_display = {
 
 static const struct intel_display_device_info xe2_lpd_display = {
 	XE_LPDP_FEATURES,
+
+	.__runtime_defaults.fbc_mask =
+		BIT(INTEL_FBC_A) | BIT(INTEL_FBC_B) |
+		BIT(INTEL_FBC_C) | BIT(INTEL_FBC_D),
 };
 
 /*

drivers/gpu/drm/i915/display/intel_fbc.h

@@ -20,6 +20,8 @@ struct intel_plane_state;
 enum intel_fbc_id {
 	INTEL_FBC_A,
 	INTEL_FBC_B,
+	INTEL_FBC_C,
+	INTEL_FBC_D,
 
 	I915_MAX_FBCS,
 };