Fixes maxSets in vkCreateDescriptorPool not used

see https://gitlab.khronos.org/vulkan/LoaderAndTools/issues/8
diff --git a/icd/intel/desc.c b/icd/intel/desc.c
index bc835cc..e7c31c3 100644
--- a/icd/intel/desc.c
+++ b/icd/intel/desc.c
@@ -205,9 +205,10 @@
 }
 
 VkResult intel_desc_region_alloc(struct intel_desc_region *region,
-                                   const VkDescriptorPoolCreateInfo *info,
-                                   struct intel_desc_offset *begin,
-                                   struct intel_desc_offset *end)
+                                 uint32_t max_sets,
+                                 const VkDescriptorPoolCreateInfo *info,
+                                 struct intel_desc_offset *begin,
+                                 struct intel_desc_offset *end)
 {
     uint32_t surface_size = 0, sampler_size = 0;
     struct intel_desc_offset alloc;
@@ -227,6 +228,9 @@
         sampler_size += size.sampler * tc->count;
     }
 
+    surface_size *= max_sets;
+    sampler_size *= max_sets;
+
     intel_desc_offset_set(&alloc, surface_size, sampler_size);
 
     *begin = region->cur;
@@ -385,7 +389,7 @@
 
     pool->dev = dev;
 
-    ret = intel_desc_region_alloc(dev->desc_region, info,
+    ret = intel_desc_region_alloc(dev->desc_region, max_sets, info,
             &pool->region_begin, &pool->region_end);
     if (ret != VK_SUCCESS) {
         intel_base_destroy(&pool->obj.base);