net: marvell: prestera: fix FEC error message for SFP ports

net: marvell: prestera: fix FEC error message for SFP ports

In prestera_ethtool_set_fecparam(), the error message is opposite of
the condition checking PRESTERA_PORT_TCVR_SFP. FEC configuration is
not allowed on SFP ports, but the message says "non-SFP ports", which
does not match the condition. However, FEC may be required depending on
the transceiver, cable, or mode, and firmware already validates invalid
combinations.

Remove the SFP transceiver check and let firmware handle validation.

Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Acked-by: Elad Nachman <enachman@marvell.com>
Link: https://patch.msgid.link/20260205091958.231413-1-alok.a.tiwari@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>