The card may be always present on the board, and for these cases neither
a status callback nor a card detect GPIO is required, and card detection
polling can be disabled.
Acked-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NRabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>