anv: Set correct binding table entry count

anv: Set correct binding table entry count

We can use surface_count as it is to set binding table entry count since
it's already in units.

On Felix's Tigerlake with the GPU at fixed frequency, this patch
improves performance of several games:

   - Shadow of the Tomb Raider: +1.5%
   - Dota2vk: +1%
   - Dark Souls: +1%

v2: (Ken)
- Remove get_binding_table_entry_count() and use surface_count directly.

Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9548>