staging: wfx: rename "config-file" DT attribute

"config-file" is too broad. Replace it by "silabs,antenna-config-file"
which is more explicit.

The attribute "config-file" is probably not widely used. This patch
obviously breaks setups that use this attribute.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20220113085524.1110708-31-Jerome.Pouiller@silabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/Documentation/devicetree/bindings/net/wireless/silabs,wfx.yaml

@@ -72,10 +72,11 @@ properties:
     description: Phandle of gpio that will be used to wake-up chip. Without this
       property, driver will disable most of power saving features.
     maxItems: 1
-  config-file:
-    description: Use an alternative file as PDS. Default is `wf200.pds`. Only
-      necessary for development/debug purpose.
-    maxItems: 1
+  silabs,antenna-config-file:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: Use an alternative file for antenna configuration (aka
+      "Platform Data Set" in Silabs jargon). Default depends of "compatible"
+      string. For "silabs,wf200", the default is 'wf200.pds'.
 
 required:
   - compatible

drivers/staging/wfx/main.c

@@ -309,7 +309,7 @@ struct wfx_dev *wfx_init_common(struct device *dev, const struct wfx_platform_da
 	wdev->hwbus_ops = hwbus_ops;
 	wdev->hwbus_priv = hwbus_priv;
 	memcpy(&wdev->pdata, pdata, sizeof(*pdata));
-	of_property_read_string(dev->of_node, "config-file", &wdev->pdata.file_pds);
+	of_property_read_string(dev->of_node, "silabs,antenna-config-file", &wdev->pdata.file_pds);
 	wdev->pdata.gpio_wakeup = devm_gpiod_get_optional(dev, "wakeup", GPIOD_OUT_LOW);
 	if (IS_ERR(wdev->pdata.gpio_wakeup))
 		return NULL;