SWDEV-504658 - Reduce the lock scope for kernel look-up

The vector with all kernels is preallocated on the executable init.
Thus, reduce the scope  of global lock to the binary creation only.

Change-Id: I73035013a6562175069137e895bba815f466ee35

hipamd/src/hip_code_object.cpp

@@ -1379,13 +1379,10 @@ const char* StatCO::getStatFuncName(const void* hostFunction) {
 }
 
 hipError_t StatCO::getStatFunc(hipFunction_t* hfunc, const void* hostFunction, int deviceId) {
-  amd::ScopedLock lock(sclock_);
-
   const auto it = functions_.find(hostFunction);
   if (it == functions_.end()) {
     return hipErrorInvalidSymbol;
   }
-
   return it->second->getStatFunc(hfunc, deviceId);
 }