mmc-merge-for-3.7-rc1

MMC highlights for 3.7:

Core:
 - Add DT properties for card detection (broken-cd, cd-gpios, non-removable)
 - Don't poll non-removable devices
 - Fixup/rework eMMC sleep mode/"power off notify" feature
 - Support eMMC background operations (BKOPS).  To set the one-time
   programmable fuse that enables bkops on an eMMC that doesn't already
   have it set, you can use the "mmc bkops enable" command in:
     git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git

Drivers:
 - atmel-mci, dw_mmc, pxa-mci, dove, s3c, spear: Add device tree support
 - bfin_sdh: Add support for the controller in bf60x
 - dw_mmc: Support Samsung Exynos SoCs
 - eSDHC: Add ADMA support
 - sdhci: Support testing a cd-gpio (from slot-gpio) instead of presence bit
 - sdhci-pltfm: Support broken-cd DT property
 - tegra: Convert to only supporting DT (mach-tegra has gone DT-only)
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