rockchip64-6.16: Partial fix of DP alt mode on some rk3399 boards

The old method carried along with board-pbp-add-dp-alt-mode.patch only
makes typec work in one(normal) orientation. This patch introduces a
proper extcon driver and makes the workaround cleaner, so orientation
switch is working.

Improvements:
- type-c DP on rk3399 works with both orientations
- type-c USB 3.0 on rk3399 works with both orientations, with minor
  issues, see below

Caveats:
- Powered USB-C hubs may be not recognized, and can be worked around by
  loading a gadget driver, or manually toggling the mode once for each
  connection.
- Some dual-role devices(phone, tablet) may be not recognized.

Affected boards:
- TinkerBoard 2/2S
- Pinebook Pro
- NanoPC T4
- Orange Pi 4
- Orange Pi 4 LTS

Tested on tinkerboard 2s. This patch contains other minor fixes for
tinker2's device tree, including adding a missing fan node, adding color
labels to leds.

The 2 patches adding dp support for nanopc t4 and pinebook pro are also
updated accordingly.

The device trees of Orange Pi 4 / 4 LTS are also updated to match the
new implementation.

config/kernel/linux-rockchip64-edge.config

@@ -2635,6 +2635,7 @@ CONFIG_TYPEC_UCSI=m
 CONFIG_UCSI_CCG=m
 CONFIG_TYPEC_TPS6598X=m
 CONFIG_TYPEC_HD3SS3220=m
+CONFIG_TYPEC_EXTCON=m
 CONFIG_TYPEC_MUX_FSA4480=m
 CONFIG_TYPEC_MUX_PI3USB30532=m
 CONFIG_TYPEC_DP_ALTMODE=m