arm64: defconfig: Enable CAN PHY transceiver driver

Enable CAN PHY transceiver driver to be built as a module which will
add support for generic CAN transceivers used by TI K3 specific SoCs.

Signed-off-by: Bhavya Kapoor <b-kapoor@ti.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>