r8169: disable RTL8126 ZRX-DC timeout

Disable it due to it dose not meet ZRX-DC specification. If it is enabled,
device will exit L1 substate every 100ms. Disable it for saving more power
in L1 substate.

Signed-off-by: ChunHao Lin <hau@realtek.com>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/20250318083721.4127-3-hau@realtek.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>