Disable device side malloc (#2009)

* Disable device side malloc

Currently device side malloc is not working and takes excessive
device memory.

Disable it for now until a working malloc is implemented.

Change-Id: I1ad908c1c53a83752383b4be96688a848642c699

src/hip_device.cpp

@@ -96,12 +96,13 @@ hipError_t hipDeviceGetLimit(size_t* pValue, hipLimit_t limit) {
     if (pValue == nullptr) {
         return ihipLogStatus(hipErrorInvalidValue);
     }
+#if __HIP_ENABLE_DEVICE_MALLOC__
     if (limit == hipLimitMallocHeapSize) {
         *pValue = (size_t)__HIP_SIZE_OF_HEAP;
         return ihipLogStatus(hipSuccess);
-    } else {
-        return ihipLogStatus(hipErrorUnsupportedLimit);
     }
+#endif
+    return ihipLogStatus(hipErrorUnsupportedLimit);
 }
 
 hipError_t hipFuncSetCacheConfig(const void* func, hipFuncCache_t cacheConfig) {