HV: Modularize boot folder

In order to remove the usage of hypervisor.h,
modularize the boot folder.
Current changes include modifications to remove
usage of acrn_vm structure pointer, from some of
the call, and remove calls to hypervisor.h,
as and when deemed fit.

Removed hva2gpa, as this was not used anywhere else
after the changes.

Tracked-On: #2694
Signed-off-by: Arindam Roy <arindam.roy@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/boot/uefi/uefi_boot.c

@@ -4,8 +4,10 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#include <hypervisor.h>
-#include <multiboot.h>
+#include <types.h>
+#include <cpu.h>
+#include <per_cpu.h>
+#include <guest/vm.h>
 #include <boot_context.h>
 #include <firmware_uefi.h>