net: pcs: pcs-mtk-lynxi: correctly report in-band status capabilities

Neither does the LynxI PCS support QSGMII, nor is in-band-status supported
in 2500Base-X mode. Fix the pcs_inband_caps() method accordingly.

Fixes: 520d29bd ("net: pcs: pcs-mtk-lynxi: implement pcs_inband_caps() method")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/Z3aJccb1vW14aukg@pidgin.makrotopia.org


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