libhsakmt: dynamic HMM and xnack detection

New properties SVMAPISupported added in Thunk spec HSA_CAPABILITY, read
from sysfs from KFD topology.

New local memory property flag CoherentHostAccess added to Thunk
HSA_MEMORYPROPERTY, read from sysfs from KFD topology.

Change-Id: I83933f0e5a61508508168873209dba4af0b77295
Signed-off-by: Philip Yang <Philip.Yang@amd.com>


[ROCm/ROCR-Runtime commit: e8f369b385]

projects/rocr-runtime/include/hsakmttypes.h

@@ -214,7 +214,8 @@ typedef union
         unsigned int RASEventNotify: 1;          // Indicates if GFX extended RASFeatures and RAS EventNotify status is available
         unsigned int ASICRevision: 4;            // Indicates the ASIC revision of the chip on this node.
         unsigned int SRAM_EDCSupport: 1;         // Indicates if GFX internal SRAM EDC/ECC functionality is active
-        unsigned int Reserved            : 5;
+        unsigned int SVMAPISupported     : 1;    // Whether or not the SVM API is supported
+        unsigned int Reserved            : 4;
     } ui32;
 } HSA_CAPABILITY;
 
@@ -340,7 +341,8 @@ typedef union
         unsigned int HotPluggable      : 1; // the memory may be removed by some system action,
                                             // memory should be used for temporary data
         unsigned int NonVolatile       : 1; // memory content is preserved across a power-off cycle.
-        unsigned int Reserved          :30;
+        unsigned int CoherentHostAccess: 1; // Whether or not device memory can be coherently accessed by the host CPU
+        unsigned int Reserved          :29;
     } ui32;
 } HSA_MEMORYPROPERTY;