riscv64: dts: starfive: Mars ethernet0 phy delay values sync with upstream Linux

riscv64: dts: starfive: Mars ethernet0 phy delay values sync with upstream Linux

Milk-V Mars vendor board support package has value 0xa (multiplier=150) for both
rx and tx delay. Upstream Linux has this as 1500 for both rx and tx delay. There
is no documentation for why this should remain 1900 so correct it now. Mars CM
and Mars CM Lite follow the same network phy delay values as Mars in the vendor
board support package.

Fixes: 92db23f7660de5897c8e3b91489b5b5780ffcd16
Signed-off-by: E Shattow <e@freeshell.de>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>