SWDEV-470571 - Disabling fence tests wont work since fine grain mem is MTYPE_NC for gfx12.

Change-Id: I663d836d5ff17345ad0d4902f3d995dedb6070c4

catch/hipTestMain/config/config_amd_linux

@@ -1256,6 +1256,10 @@
         "=== SWDEV-475482 : Disable tests to merge clr change 08/02/24 ===",
         "Unit_hipCreateTextureObject_LinearResource",
         "Unit_hipCreateTextureObject_Pitch2DResource",
+    #endif
+    #if defined gfx1200 || defined gfx1201
+        "=== SWDEV-470751 : Fine Grain memory is MTYPE_NC due to HW bug.",
+        "Unit_hipEventCreateWithFlags_DisableSystemFence_CohHstMem",
     #endif
         "End of json"
     ]