hw/net: cadence_gem: Fix MDIO_OP_xxx values
Testing upstream U-Boot with 'sifive_u' machine we see:
=> dhcp
ethernet@
10090000: PHY present at 0
Could not get PHY for ethernet@
10090000: addr 0
phy_connect failed
This has been working till QEMU 8.1 but broken since QEMU 8.2.
Fixes:
1b09eeb122aa ("hw/net/cadence_gem: use FIELD to describe PHYMNTNC register fields")
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>