Solve issues with hip-vdi runtime static lib

1.Combine libamdhip64_static_base.a and libamdvdi_static.a into libamdhip64_static.a.
2.Let hipcc use -use-staticlib to link libamdhip64_static.a.
3.Add some samples for static lib.
4.Fix compiling failure of code object.

Change-Id: Ic8c95228eb139058da8b5d66ba8439486154ca6f

vdi/hip_platform.cpp

@@ -30,7 +30,7 @@
 constexpr unsigned __hipFatMAGIC2 = 0x48495046; // "HIPF"
 
 thread_local std::stack<ihipExec_t> execStack_;
-PlatformState* PlatformState::platform_ = new PlatformState();
+PlatformState* PlatformState::platform_; // Initiaized as nullptr by default
 
 struct __CudaFatBinaryWrapper {
   unsigned int magic;