net: phy: nxp-c45-tja11xx: add support for TJA1121

Add support for TJA1121 which is based on TJA1120 but with
additional MACsec IP.

Signed-off-by: Andrei Botila <andrei.botila@oss.nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250228154320.2979000-3-andrei.botila@oss.nxp.com


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