stlv7325: fix Ethernet IO voltages
stlv7325: fix Ethernet IO voltages

The IO voltages of Ethernet pins is set to 2.5V instead of 1.5V.

Fix this in the platform definition.

Signed-off-by: Icenowy Zheng <f46fab9f9f91073a4262a6bce61dc3d05ad0a078@icenowy.me>

litex-hub/litex-boards