README: Record that the Type-C driver has landed

The table said the FUSB302 was not working, which was accurate before this
series and is now misleading in the other direction: the driver is here and
complete, it simply has no board turning it on.

Say both halves. The row is partial rather than working because
RK_FUSB302_ENABLE defaults to FALSE and no platform sets it, so no user sees
any change yet; the note records that on a board that does enable it the
driver does orientation, sink and source power delivery and DisplayPort Alt
Mode, and that per-board enablement is coming separately.

The DisplayPort and USB 3 rows and the one-orientation troubleshooting notes
are left alone on purpose. They describe what every board still does today,
and rewriting them now would promise behaviour no platform has yet.

Author: C-Prime90

README.md

@@ -100,7 +100,7 @@ Note that this list is subject to change at any time as devices gain better supp
 | Cooling fan                           | 🟢 Working     | Supported on most platforms. Fan connector where present, otherwise available at the GPIO header for 3-pin PWM fans (do *not* connect 2-pin fans there!):<br>* Orange Pi 5: `GPIO4_B2`<br>* Indiedroid Nova: `GPIO4_B4` |
 | Status LED                            | 🟢 Working     | |
 | Voltage regulators (RK806/RK860)      | 🟢 Working     | |
-| FUSB302 USB Type-C Controller         | 🔴 Not working | Required for PD negotiation and connector orientation switching |
+| FUSB302 USB Type-C Controller         | 🟡 Partial     | Driver present but not yet used: `RK_FUSB302_ENABLE` defaults to FALSE and no board sets it, so nothing changes for any platform yet. On a board that enables it the driver is complete — plug orientation, sink and source power delivery, and DisplayPort Alt Mode, which between them fix the one-orientation limits noted above. Per-board enablement follows separately. |
 
 # Getting started
 ## 1. Requirements