anv: Increase maxBoundDescriptorSets to 32

We recently had a request to support a larger maxBoundDescriptorSets,
specifically 32, and there doesn't appear to be a reason we need to
restrict this to 8.  According to vulkan.gpuinfo.org reports, most
Vulkan drivers appear to support 32.

Acked-by: Caio Oliveira <caio.oliveira@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14952>

src/intel/vulkan/anv_private.h

@@ -189,7 +189,7 @@ struct intel_perf_query_result;
 #define MAX_VBS         28
 #define MAX_XFB_BUFFERS  4
 #define MAX_XFB_STREAMS  4
-#define MAX_SETS         8
+#define MAX_SETS        32
 #define MAX_RTS          8
 #define MAX_VIEWPORTS   16
 #define MAX_SCISSORS    16