Add full description of USB-MUIC (MAX77693 MUIC) and MUIC-MHL
connections, along with proper USB connector and OTG mode for DWC2 USB
controller.

This fixes dtc W=1 warnings:

  Warning (graph_child_address): /i2c-mhl/hdmi-bridge@39/ports: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary

Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: replicant@osuosl.org
Cc: phone-devel@vger.kernel.org
Cc: ~postmarketos/upstreaming@lists.sr.ht
Cc: Martin Jücker <martin.juecker@gmail.com>
Cc: Henrik Grimler <henrik@grimler.se>
Cc: Artur Weber <aweber.kernel@gmail.com>
Tested-by: Henrik Grimler <henrik@grimler.se>
Link: https://lore.kernel.org/r/20230723142417.97734-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>