mmc: sdhci-esdhc: broken card detection is not a default quirk

It can be worked around using a GPIO which will be done for i.MX later.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Tested-by: Marc Reilly <marc@cpdesign.com.au>
Tested-by: Eric Benard <eric@eukrea.com>
Signed-off-by: Chris Ball <cjb@laptop.org>