anv: Set maxComputeSharedMemorySize to 64k

This value is supported since gen7.  See also 8514c75a "i965: Set
compute shader shared memory max to 64k".

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
10 jobs for !1290 with r/max-compute-shared-memory-size in 10 minutes and 55 seconds (queued for 2 seconds)
merge request