drm/panel: raydium-rm67191: drop use of legacy drm_bus_flags

Use the non-legacy drm_bus_flag _SAMPLE_ member.
No functional change.

Note:
DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE = DRM_BUS_FLAG_PIXDATA_NEGEDGE

Signed-off-by: Sam Ravnborg <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
Cc: Laurent Pinchart <[e-mail]>
Cc: Robert Chiras <[e-mail]>
Cc: Thierry Reding <[e-mail]>
Cc: Sam Ravnborg <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/panel/panel-raydium-rm67191.c

···
 };
 
 static const u32 rad_bus_flags = DRM_BUS_FLAG_DE_LOW |
-				 DRM_BUS_FLAG_PIXDATA_NEGEDGE;
+				 DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE;
 
 struct rad_panel {
 	struct drm_panel panel;