SWDEV-277566 - Add amd::Program::load interface

Skeleton implementation to allow change at HIP and OpenCL.

Change-Id: I70e69d33c6870cc96238b2f18010ace86d56147f

rocclr/platform/program.hpp

@@ -221,6 +221,9 @@ class Program : public RuntimeObject {
                void(CL_CALLBACK* notifyFptr)(cl_program, void*) = NULL, void* data = NULL,
                bool optionChangable = true, bool newDevProg = true);
 
+  //! Load the program. If devices is not specified, then load program for all devices.
+  bool load(const std::vector<Device*>& devices = {});
+
   //! RTTI internal implementation
   virtual ObjectType objectType() const { return ObjectTypeProgram; }