Thunk interface to get SDMA engine info

Add SDMA engine info fields to node properties and
modify get node properties API to read SDMA engine
info from sysfs

Change-Id: Iea877b5bc008cc9df9405daf564a359535f1bc9f
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>

include/hsakmttypes.h

@@ -299,7 +299,9 @@ typedef struct _HsaNodeProperties
     HSA_DEBUG_PROPERTIES DebugProperties; // Debug properties of this node.
     HSAuint64       HiveID;            // XGMI Hive the GPU node belongs to in the system. It is an opaque and static
                                        // number hash created by the PSP
-    HSAuint8        Reserved[44];
+    HSAuint32       NumSdmaEngines;    // number of PCIe optimized SDMA engines
+    HSAuint32       NumSdmaXgmiEngines;// number of XGMI optimized SDMA engines
+    HSAuint8        Reserved[36];
 } HsaNodeProperties;