Remove region/pool size limits for 902.

Temporary measure. Must be reverted once CRAT tables have been fixed.

Change-Id: Id2f2673edbf7b6fc5752f8d871042b4bf4de653c

runtime/hsa-runtime/core/runtime/amd_memory_region.cpp

@@ -136,8 +136,9 @@ MemoryRegion::MemoryRegion(bool fine_grain, bool full_profile, core::Agent* owne
         (full_profile) ? os::GetUserModeVirtualMemorySize() : kGpuVmSize;
   }
 
-  max_single_alloc_size_ =
-      AlignDown(static_cast<size_t>(GetPhysicalSize()), kPageSize_);
+  // Temporary workaround for CRAT issue.
+  max_single_alloc_size_ = AlignDown(size_t(-1), kPageSize_);
+  // max_single_alloc_size_ = AlignDown(static_cast<size_t>(GetPhysicalSize()), kPageSize_);
 
   mem_flag_.ui32.CoarseGrain = (fine_grain) ? 0 : 1;