exec: move include files to include/exec/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

memory_mapping.c

diff --git a/memory_mapping.c b/memory_mapping.c
index a82e190..c829a9f 100644
--- a/memory_mapping.c
+++ b/memory_mapping.c
@@ -12,7 +12,7 @@
  */
 
 #include "cpu.h"
-#include "cpu-all.h"
+#include "exec/cpu-all.h"
 #include "memory_mapping.h"
 
 static void memory_mapping_list_add_mapping_sorted(MemoryMappingList *list,