microchip icicle: Enable PCS on Cadence Ethernet PCS needs to be enabled for SGMII to be supported by the Linux kernel. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-ID: <20251004200049.871646-5-linux@roeck-us.net> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>