SWDEV-501403 - Switch to std::shared_mutex for streamSetLock

Shared mutex allows to have access to the list of streams  from
multiple threads at the same time.

Change-Id: Ibee64b846cde03321d5b17dbee2829c0bab7e7d6

hipamd/src/hip_internal.hpp

@@ -488,7 +488,7 @@ public:
     // Device lock
     amd::Monitor lock_{true};
     // Guards device stream set
-    amd::Monitor streamSetLock{};
+    std::shared_mutex streamSetLock;
     std::unordered_set<hip::Stream*> streamSet;
     /// ROCclr context
     amd::Context* context_;