meta: Add Cyberpunk 2077 to supported list with (huge) caveats.

Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>

CHANGELOG.md

@@ -7,11 +7,20 @@ This release fixes various bugs (mostly workarounds) and improves GPU-bound perf
 New games added to "expected to work" list:
  - The Division (was working already in 2.0, but missing from list)
  - AC: Valhalla (*)
+ - Cyberpunk 2077 (**)
 
 (*): Game requires full D3D12 sparse texture support to work.
 Currently only works on NVIDIA drivers.
 RADV status remains unknown until support for this feature lands in Mesa.
 
+(**): Currently only runs correctly on AMD hardware with RADV and `VK_VALVE_mutable_descriptor_type`.
+As of writing, this requires the latest Mesa Git build.
+The game has some fatal bugs where it relies on undefined behavior with descriptor management
+which this extension works around by accident.
+The game will start and run on NVIDIA, but just like what happens without the extension on AMD,
+the GPU will randomly hang, making the game effectively unplayable.
+A game update to fix this bug would likely make the game playable on NVIDIA as well.
+
 Bug fixes and workarounds:
  - Fix various implementation bugs which caused AC: Valhalla to not work.
  - Work around game bug in Death Stranding where accessing map could cause corrupt rendering.