To fix this, add special IO functions for ELP_CTRL access that are
using sdio_readb/sdio_writeb. Similar handling is done in TI
reference driver from Android code drop.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Cc: Bob Copeland <me@bobcopeland.com> Acked-by: Kalle Valo <kalle.valo@iki.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>