docs/features: Track Panfrost
Mark support for Panfrost with the PAN_MESA_DEBUG=gles3 flag set (which exposes a few buggier features for GLES 3.0, but we're actually quite close to conformance. I expect this to become default in a few weeks), based on what's supported for Mali T860 (our flagship). Less features are supported on Mali T720 due to h/w limitations, and Bifrost support is very much still in the pipes but will support all this soon enough.
Closes: #255 (closed)
Signed-off-by: Alyssa Rosenzweig alyssa.rosenzweig@collabora.com