ALSA: hda: Fix implicit definition of pci_iomap() on SH

Include asm/io.h directly so we've got a definition of pci_iomap(), the
current set of includes do this implicitly on most architectures but not
on SH.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/pci/hda/patch_ca0132.c

@@ -31,6 +31,7 @@
 #include <linux/types.h>
 #include <linux/io.h>
 #include <linux/pci.h>
+#include <asm/io.h>
 #include <sound/core.h>
 #include <sound/hda_codec.h>
 #include "hda_local.h"