drm/simpledrm: Use panel-dimensions property as alternative to panel

Commit fbf0ea2 ("of: property: fw_devlink: Add a devlink for panel
followers") added a probe ordering hint on "panel" properties. This is
not appropriate for simpledrm as it is expected to be in an useable
state. Use "panel-dimensions" as alternative property to parse the
physical panel dimensions from.

Signed-off-by: Janne Grunau <[email protected]>

Author: jannau

drivers/gpu/drm/tiny/simpledrm.c

@@ -843,6 +843,8 @@ static struct simpledrm_device *simpledrm_device_create(struct drm_driver *drv,
 		if (IS_ERR(mem))
 			return ERR_CAST(mem);
 		panel_node = of_parse_phandle(of_node, "panel", 0);
+		if (!panel_node)
+			panel_node = of_parse_phandle(of_node, "panel-dimensions", 0);
 		if (panel_node) {
 			simplefb_read_u32_of(dev, panel_node, "width-mm", &width_mm);
 			simplefb_read_u32_of(dev, panel_node, "height-mm", &height_mm);