mmc: core: Add tunable delay before detecting card after card is inserted
Allow to use tunable delay before detecting card after card is inserted, which either comes from firmware node, or comes from debounce value passed on to mmc_gpiod_request_cd(). If the platform doesn't support debounce, then we fall back to use the debounce period as the delay, otherwise, it behaves the same as before that a HW debounce(if set) plus a 200ms hardcode delay before detecting the card. Signed-off-by: NShawn Lin <shawn.lin@rock-chips.com> Reviewed-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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