hv: mod: do not use explicit arch name when including headers

Instead of "#include <x86/foo.h>", use "#include <asm/foo.h>".

In other words, we are adopting the same practice in Linux kernel.

Tracked-On: #5920
Signed-off-by: Liang Yi <yi.liang@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>

hypervisor/common/schedule.c

@@ -6,13 +6,13 @@
 
 #include <rtl.h>
 #include <list.h>
-#include <x86/lib/bits.h>
-#include <x86/cpu.h>
-#include <x86/per_cpu.h>
-#include <x86/lapic.h>
+#include <asm/lib/bits.h>
+#include <asm/cpu.h>
+#include <asm/per_cpu.h>
+#include <asm/lapic.h>
 #include <schedule.h>
 #include <sprintf.h>
-#include <x86/irq.h>
+#include <asm/irq.h>
 
 bool is_idle_thread(const struct thread_object *obj)
 {