modulization: move virtual cpuid stuff into guest dir

functions like set_vcpuid_entries & guest_cpuid should only
server for virtual cpuid, so move such kind of functions
to guest/vcpuid.c.

and all native cpuid APIs will keep in cpuid.h

Tracked-On: #1842
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/include/arch/x86/hv_arch.h

@@ -28,6 +28,7 @@
 #include <vioapic.h>
 #include <vm.h>
 #include <cpuid.h>
+#include <vcpuid.h>
 #include <page.h>
 #include <mmu.h>
 #include <pgtable.h>