memory: Do not include "exec/ioport.h" if it is not necessary

Code change produced with:
    $ git grep '#include "exec/ioport.h"' memory.c | \
      cut -d: -f-1 | \
      xargs egrep -Li "(portio|cpu_(in|out).\()" | \
      xargs sed -i.bak '/#include "exec\/ioport.h"/d'

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180528232719.4721-5-f4bug@amsat.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

memory.c

@@ -19,7 +19,6 @@
 #include "cpu.h"
 #include "exec/memory.h"
 #include "exec/address-spaces.h"
-#include "exec/ioport.h"
 #include "qapi/visitor.h"
 #include "qemu/bitops.h"
 #include "qemu/error-report.h"