Update documentation to include QNX 8.0

Author: flba-eb

src/doc/rustc/src/platform-support/nto-qnx.md

@@ -22,6 +22,8 @@ Currently, the following QNX Neutrino versions and compilation targets are suppo
 
 | QNX Neutrino Version | Target Architecture | Full support | `no_std` support |
 |----------------------|---------------------|:------------:|:----------------:|
+| 8.0              | AArch64  | ? | ✓ |
+| 8.0              | x86      | ? | ✓ |
 | 7.1 with io-pkt  | AArch64  | ✓ | ✓ |
 | 7.1 with io-sock | AArch64  | ? | ✓ |
 | 7.1 with io-pkt  | x86_64   | ✓ | ✓ |
@@ -31,6 +33,8 @@ Currently, the following QNX Neutrino versions and compilation targets are suppo
 
 On QNX 7.0 and 7.1, `io-pkt` is used as network stack by default. QNX 7.1 includes
 the optional network stack `io-sock`.
+QNX 8.0 always uses `io-sock`. QNX 8.0 support is currently in development
+and not tested.
 
 Adding other architectures that are supported by QNX Neutrino is possible.