net: phy: Add driver for Motorcomm yt8531 gigabit ethernet phy

Add a driver for the motorcomm yt8531 gigabit ethernet phy. We have
verified the driver on StarFive VisionFive2 board.

Signed-off-by: Yanhong Wang <yanhong.wang@starfivetech.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 2415877..0c3c39a 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -220,6 +220,12 @@
 
 endif # PHY_MICREL
 
+config PHY_MOTORCOMM
+	tristate "Motorcomm PHYs"
+	help
+	  Enables support for Motorcomm network PHYs.
+	  Currently supports the YT8531 Gigabit Ethernet PHYs.
+
 config PHY_MSCC
 	bool "Microsemi Corp Ethernet PHYs support"