block: move include files to include/block/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/block/qed.h b/block/qed.h
index a063bf7..2b4dded 100644
--- a/block/qed.h
+++ b/block/qed.h
@@ -15,7 +15,7 @@
 #ifndef BLOCK_QED_H
 #define BLOCK_QED_H
 
-#include "block_int.h"
+#include "block/block_int.h"
 
 /* The layout of a QED file is as follows:
  *