HV: further cleanup of header inclusions

According to the comments in hypervisor:
 " This file includes config header file "bsp_cfg.h" and other
	hypervisor used header files.
	It should be included in all the source files."

this patch includes all common header files in hypervisor.h
then removes other redundant inclusions

Signed-off-by: Zide Chen <zide.chen@intel.com>

hypervisor/arch/x86/cpu.c

@@ -29,13 +29,9 @@
  */
 
 #include <hypervisor.h>
-#include <hv_lib.h>
-#include <acrn_common.h>
 #include <bsp_extern.h>
-#include <hv_arch.h>
 #include <schedule.h>
 #include <version.h>
-#include <hv_debug.h>
 
 spinlock_t cpu_secondary_spinlock = {
 	.head = 0,