lavapipe: expose more storage-image features
I believe these Gallium caps imply these Vulkan features. If they don't, then we got things wrong on the Zink side as well ;)
While we're at it, query shaderStorageImageWriteWithoutFormat
based on
the PIPE_SHADER_CAP_MAX_SHADER_IMAGES
cap. This matches what the gallium
OpenGL frontend does.
This brings Zink on Lavapipe up to OpenGL 4.5.
Edited by Erik Faye-Lund