uboot-imx

omap_hsmmc: add driver check for write protection

Add check for write protection in omap mmc driver.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Reviewed-by: Tom Rini <trini@ti.com>