x86: put generic mm_hooks include into PARAVIRT

With PARAVIRT, we actually have arch_{dup,exit}_mmap functions,
so we can't include the generic header

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

include/asm-x86/mmu_context_64.h

@@ -7,7 +7,9 @@
 #include <asm/pda.h>
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
+#ifndef CONFIG_PARAVIRT
 #include <asm-generic/mm_hooks.h>
+#endif
 
 /*
  * possibly do the LDT unload here?