kfdtest: Fix ISA buffers not executable

Fix for some places where the ISA buffers are not declared as
executable. Previous code in Thunk was blindly setting exec bit on all
memory allocations so this issue was masked.

Change-Id: Ic7a1169c69fb85ff9e8ea7bcc49a1845b37c08ff


[ROCm/ROCR-Runtime commit: fe8d8c15f1]

projects/rocr-runtime/libhsakmt/tests/kfdtest/src/RDMATest.cpp

@@ -57,7 +57,7 @@ TEST_F(RDMATest, GPUDirect) {
     int defaultGPUNode = m_NodeInfo.HsaDefaultGPUNode();
     ASSERT_GE(defaultGPUNode, 0) << "failed to get default GPU Node";
 
-    HsaMemoryBuffer isaBuffer(PAGE_SIZE, defaultGPUNode);
+    HsaMemoryBuffer isaBuffer(PAGE_SIZE, defaultGPUNode, true/*zero*/, false/*local*/, true/*exec*/);
     HsaMemoryBuffer srcSysBuffer(BufferSize, defaultGPUNode, false);
     HsaMemoryBuffer srcLocalBuffer(BufferSize, defaultGPUNode, false, true);
 
@@ -130,7 +130,7 @@ TEST_F(RDMATest, ContiguousVRAMAllocation) {
         return;
     }
 
-    HsaMemoryBuffer isaBuffer(PAGE_SIZE, defaultGPUNode);
+    HsaMemoryBuffer isaBuffer(PAGE_SIZE, defaultGPUNode, true/*zero*/, false/*local*/, true/*exec*/);
     HsaMemoryBuffer srcSysBuffer(PAGE_SIZE, defaultGPUNode, false);
     void *LocalBuffer;
     HsaMemFlags memFlags = {0};