fix: allow fork() after zeInit()

- do not release resources derived from parent process
- zeInit() in child should initilize new driver

Related-To: NEO-11761

Signed-off-by: Mateusz Hoppe <mateusz.hoppe@intel.com>

shared/source/os_interface/linux/sys_calls_linux.cpp

@@ -45,6 +45,10 @@ unsigned int getProcessId() {
     return pid;
 }
 
+unsigned int getCurrentProcessId() {
+    return getpid();
+}
+
 unsigned long getNumThreads() {
     struct stat taskStat;
     if (stat("/proc/self/task", &taskStat) == 0) {