drm/msm: Include <linux/io.h>

Include <linux/io.h> to get the declaration of devm_ioremap() on
sparc64. No functional changes.

Signed-off-by: Thomas Zimmermann <[e-mail]>
Reported-by: kernel test robot <[e-mail]>
Link: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
Reviewed-by: Dmitry Baryshkov <[e-mail]>
Patchwork: https://patchwork.freedesktop.org/patch/530550/
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Baryshkov <[e-mail]>

drivers/gpu/drm/msm/msm_io_utils.c

···
  */
 
 #include <linux/interconnect.h>
+#include <linux/io.h>
 
 #include "msm_drv.h"