mmc: mmci: Use state machine state as exit condition

Return true if and only if we reached the state
MMCI_BUSY_DONE in the ux500 ->busy_complete() callback.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230405-pl180-busydetect-fix-v7-7-69a7164f2a61@linaro.org


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>