net: phy: aquantia: AQR115c fix up PMA capabilities

AQR115c reports incorrect PMA capabilities which includes
10G/5G and also incorrectly disables capabilities like autoneg
and 10Mbps support.

AQR115c as per the Marvell databook supports speeds up to 2.5Gbps
with autonegotiation.

Fixes: 0ebc581f ("net: phy: aquantia: add support for aqr115c")
Link: https://lore.kernel.org/all/20240913011635.1286027-1-quic_abchauha@quicinc.com/T/


Signed-off-by: Abhishek Chauhan <quic_abchauha@quicinc.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20241001224626.2400222-2-quic_abchauha@quicinc.com


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