KVM: Move cr0/cr4/efer related helpers to x86.h

They have more general scope than the mmu.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

arch/x86/kvm/emulate.c

@@ -33,7 +33,6 @@
 #include <asm/kvm_emulate.h>
 
 #include "x86.h"
-#include "mmu.h"		/* for is_long_mode() */
 
 /*
  * Opcode effective-address decode tables.