vulkan: Consistent naming scheme for resources in XGL

Bug 13230
header: 0.78.0
includes review feedback.

v2: replace VK_FORMAT_IMAGE_COPY_BIT by VK_FORMAT_COLOR_ATTACHMENT_BIT for now
    (olv)
diff --git a/layers/draw_state.cpp b/layers/draw_state.cpp
index 1ad7c1d..18e2738 100644
--- a/layers/draw_state.cpp
+++ b/layers/draw_state.cpp
@@ -677,7 +677,7 @@
             actualType = VK_DESCRIPTOR_TYPE_SAMPLER;
             break;
         case VK_STRUCTURE_TYPE_UPDATE_SAMPLER_TEXTURES:
-            actualType = VK_DESCRIPTOR_TYPE_SAMPLER_TEXTURE;
+            actualType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
             break;
         case VK_STRUCTURE_TYPE_UPDATE_IMAGES:
             actualType = ((VkUpdateImages*)pUpdateStruct)->descriptorType;