SWDEV-299127 - Support External Mipmap

Support hipExternalMemoryGetMappedMipmappedArray().
Add ImageExternalBuffer to differiate ImageBuffer.
Currently we only support tiling_optimal mode as
vulkan driver doesn't provide tiling information.

Change-Id: I7e3524cdde53e4df9f728894bcebf4bd3f58d4d9

rocclr/platform/memory.hpp

@@ -566,7 +566,7 @@ class Image : public Memory {
         size_t depth, size_t rowPitch, size_t slicePitch, uint mipLevels = 1);
 
   Image(Buffer& buffer, Type type, Flags flags, const Format& format, size_t width, size_t height,
-        size_t depth, size_t rowPitch, size_t slicePitch);
+        size_t depth, size_t rowPitch, size_t slicePitch, uint mipLevels = 1, size_t offset = 0);
 
   //! Validate image dimensions with supported sizes
   static bool validateDimensions(