asahi: small improvements on bindless sampler path
What does this MR do and why?
asahi: allow more samplers for shaderdb
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.