SWDEV-1 - Fix warnings and update disabled test list (#163)

- Fix warnings in some test cases due to unused variables or signed/unsigned comparison.
- Disabled vulkan tests on MI200.

catch/hipTestMain/config/config_amd_linux_MI2xx.json

@@ -8,7 +8,18 @@
 		"Unit_BuiltinAtomicsRTC_fmaxCoherentGlobalMem",
 		"Unit_BuiltinAtomicsRTC__fminCoherentGlobalMem",
 		"Unit_BuiltInAtomicAdd_CoherentGlobalMemWithRtc",
-		"Unit_hipMemGetAddressRange_Negative"
+		"Unit_hipMemGetAddressRange_Negative",
+        "Unit_hipExternalMemoryGetMappedBuffer_Vulkan_Positive_Read_Write",
+        "Unit_hipExternalMemoryGetMappedBuffer_Vulkan_Negative_Parameters",
+        "Unit_hipImportExternalMemory_Vulkan_Negative_Parameters",
+        "Unit_hipWaitExternalSemaphoresAsync_Vulkan_Positive_Binary_Semaphore",
+        "Unit_hipWaitExternalSemaphoresAsync_Vulkan_Positive_Multiple_Semaphores",
+        "Unit_hipWaitExternalSemaphoresAsync_Vulkan_Negative_Parameters",
+        "Unit_hipSignalExternalSemaphoresAsync_Vulkan_Positive_Binary_Semaphore",
+        "Unit_hipSignalExternalSemaphoresAsync_Vulkan_Positive_Multiple_Semaphores",
+        "Unit_hipSignalExternalSemaphoresAsync_Vulkan_Negative_Parameters",
+        "Unit_hipImportExternalSemaphore_Vulkan_Negative_Parameters",
+        "Unit_hipDestroyExternalSemaphore_Vulkan_Negative_Parameters"
 	]
 
 }