arm64: defconfig: Enable Rockchip I2S TDM and ES8316 drivers

The Rockchip I2S TDM driver and the Everest Semi ES8316 codec are used
to provide analog audio support on the RK3588 SoC based Rock 5B board.

Enable both of them as modules.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>