zink: handle VK_IMAGE_LAYOUT_PRESENT_SRC_KHR barriers

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9243>

src/gallium/drivers/zink/zink_context.c

@@ -1056,6 +1056,9 @@ access_src_flags(VkImageLayout layout)
    case VK_IMAGE_LAYOUT_PREINITIALIZED:
       return VK_ACCESS_HOST_WRITE_BIT;
 
+   case VK_IMAGE_LAYOUT_PRESENT_SRC_KHR:
+      return 0;
+
    default:
       unreachable("unexpected layout");
    }
@@ -1088,6 +1091,9 @@ access_dst_flags(VkImageLayout layout)
    case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
       return VK_ACCESS_TRANSFER_WRITE_BIT;
 
+   case VK_IMAGE_LAYOUT_PRESENT_SRC_KHR:
+      return 0;
+
    default:
       unreachable("unexpected layout");
    }