phy: Fix node description of phy_get_by_node

node is most of device related API's are termed as device
node and without device related API's are termed as ofnode.

generic_phy_get_by_node API is without device API, so fixed
the node description as ofnode.

Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Tom Rini <trini@konsulko.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/include/generic-phy.h b/include/generic-phy.h
index 55629ae..6d7cf53 100644
--- a/include/generic-phy.h
+++ b/include/generic-phy.h
@@ -215,7 +215,7 @@
 /**
  * generic_phy_get_by_node() - Get a PHY device by integer index on ofnode
  *
- * @node:	the device node
+ * @node:	The client ofnode.
  * @index:	The index in the list of available PHYs
  * @phy:	A pointer to the PHY port
  *