arm64: defconfig: Enable Toshiba TC358767 bridge

arm64: defconfig: Enable Toshiba TC358767 bridge

Siemens' SIMATIC IOT2050 platform[0], based on Texas Instruments'
AM65x SoC[1], uses Toshiba TC358767[2] to convert DPI video to
DisplayPort (DP) video output. The original DPI signals are generated
by AM65x's Display SubSystem (DSS).

Toshiba TC358767 is also capable of other video format conversions, viz,
DPI to (e)DP, DSI to (e)DP, and DSI to DPI.

Enable the video bridge Toshiba TC358767.

[0]: https://www.siemens.com/global/en/products/automation/pc-based/iot-gateways/simatic-iot2050.html
[1]: https://www.ti.com/product/AM6548
[2]: https://toshiba.semicon-storage.com/info/datasheet_en_20230731.pdf?did=36657

Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Link: https://lore.kernel.org/r/20231030152834.18450-1-a-bhatia1@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>