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/arch/x86/security.c

@@ -5,12 +5,12 @@
  */
 
 #include <types.h>
-#include <x86/msr.h>
-#include <x86/cpufeatures.h>
-#include <x86/cpu.h>
-#include <x86/per_cpu.h>
-#include <x86/cpu_caps.h>
-#include <x86/security.h>
+#include <asm/msr.h>
+#include <asm/cpufeatures.h>
+#include <asm/cpu.h>
+#include <asm/per_cpu.h>
+#include <asm/cpu_caps.h>
+#include <asm/security.h>
 #include <logmsg.h>
 
 static bool skip_l1dfl_vmentry;