anv: fix descriptor pool internal size allocation
The size of the pool is slightly smaller than the size of the
structure containing the whole pool. We need to take that into account
on when setting up the internals.
Fixes a crash due to out of bound memory access in:
dEQP-VK.api.descriptor_pool.out_of_pool_memory
v2: Drop debug traces (Lionel)
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: "17.0 13.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit
c3421106ec332bf3a943ccf9447edf00dc7f3618)