Add the dts property for the capability if TRGMII supported on GAMC0
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Required properties:
- compatible: Should be "mediatek,eth-mac"
- reg: The number of the MAC
-- phy-handle: see ethernet.txt file in the same directory.
+- phy-handle: see ethernet.txt file in the same directory and
+ the phy-mode "trgmii" required being provided when reg
+ is equal to 0 and the MAC uses fixed-link to connect
+ with inernal switch such as MT7530.
Example: