SWDEV-391178 - Extern monitor to avoid copy in multithreading.

Defining monitor in header cause copy and hence it's moved to cpp.

Change-Id: Ib07bbde2808d9cb2af9349076f777e8a5b28d210


[ROCm/clr commit: e8eb1772f2]

projects/clr/hipamd/src/hip_context.cpp

@@ -26,7 +26,7 @@
 #include "utils/versions.hpp"
 
 std::vector<hip::Device*> g_devices;
-
+amd::Monitor g_hipInitlock{"hipInit lock"};
 namespace hip {
 thread_local TlsAggregator tls;
 amd::Context* host_context = nullptr;