bug 14968: Limitations of transfer operations on DMA queues (WIP)

Add minImageTransferGranularity.

https://cvs.khronos.org/bugzilla/show_bug.cgi?id=14968
diff --git a/include/vulkan.h b/include/vulkan.h
index f8af14a..3f77281 100644
--- a/include/vulkan.h
+++ b/include/vulkan.h
@@ -1308,6 +1308,7 @@
     VkQueueFlags                                queueFlags;
     uint32_t                                    queueCount;
     uint32_t                                    timestampValidBits;
+    VkExtent3D                                  minImageTransferGranularity;
 } VkQueueFamilyProperties;
 
 typedef struct {