kfdtest: remove scc test in MapUnmapToNodes for gfx90a A+A

Modifier scc is disabled from gfx90a's asm, so remove the
shader for gfx90a A+A and keep it for newer asics with scc
support.

Signed-off-by: Eric Huang <jinhuieric.huang@amd.com>
Change-Id: Iec3c7ccd5156a855adb2b02feb3db0761876aa2f

tests/kfdtest/src/KFDMemoryTest.cpp

@@ -177,7 +177,7 @@ TEST_F(KFDMemoryTest, MapUnmapToNodes) {
     HsaMemoryBuffer dstBuffer(PAGE_SIZE, defaultGPUNode);
 
     const char *pReadMemory;
-    if (m_NodeInfo.IsNodeXGMItoCPU(defaultGPUNode))
+    if (m_NodeInfo.IsNodeXGMItoCPU(defaultGPUNode) && (m_FamilyId != FAMILY_AL))
         /* On A+A system memory is mapped as NC */
         pReadMemory = PollNCMemoryIsa;
     else