rocr: Use view3dAs2dArray flag, for thick/3D swizzle modes.

Added HSA_IMAGE_ENABLE_3D_SWIZZLE_DEBUG environment flag to
enable/disable this. Default value is false (view3dAs2dArray = 1)
Enabling this flag will enable support for swizzles that do 3D
interleaving. Note that all features of 3D images are supported
with 2D swizzles,it's just that the access patterns are different
and therefore cache hit-rates may be better or worse, depending
on how it's used. Volumetric algorithms do better with 3D and apps
that tend to access a single slice at a time do better with 2D.

Change-Id: Id8574a6710fe4333a1ee331e5ce9195a81434198

runtime/hsa-runtime/image/addrlib/src/gfx12/gfx12addrlib.cpp

@@ -1253,7 +1253,8 @@ void Gfx12Lib::SanityCheckSurfSize(
         // image, at least for single samples) but they still have the same number of mip levels as the
         // parent image.  This disconnect produces false assertions below as the image size doesn't apparently
         // support the specified number of mip levels.
-        ((pIn->flags.hiZHiS == 0) || (pIn->numMipLevels == 1)))
+        ((pIn->flags.hiZHiS == 0) || (pIn->numMipLevels == 1))   &&
+        !(pIn->flags.view3dAs2dArray))
     {
         UINT_32  lastMipSize   = 1;
         UINT_32  dataChainSize = 0;