Add a new SDHCI quirk, SDHCI_QUIRK_BROKEN_AUTO_STOP, to workaround
controllers that do not support or have broken ACMD12 implementations.

Reviewed by: jmcneill
Obtained from: NetBSD
MFC after: 2 weeks
Sponsored by: Rubicon Communications, LLC (Netgate)
Differential Revision: https://reviews.freebsd.org/D10602