MMC core:

 - A couple of changes to improve the support for erase/discard/trim cmds
 - Add eMMC HS400 enhanced strobe support
 - Show OCR and DSR registers in SYSFS for MMC/SD cards
 - Correct and improve busy detection logic for MMC switch (CMD6) cmds
 - Disable HPI cmds for certain broken Hynix eMMC cards
 - Allow MMC hosts to specify non-support for SD and MMC cmds
 - Some minor additional fixes

MMC host:
 - sdhci: Re-works, fixes and clean-ups
 - sdhci: Add HW auto re-tuning support
 - sdhci: Re-factor code to prepare for adding support for eMMC CMDQ
 - sdhci-esdhc-imx: Fixes and clean-ups
 - sdhci-esdhc-imx: Update system PM support
 - sdhci-esdhc-imx: Enable HW auto re-tuning
 - sdhci-bcm2835: Remove driver as sdhci-iproc is used instead
 - sdhci-brcmstb: Add new driver for Broadcom BRCMSTB SoCs
 - sdhci-msm: Add support for UHS cards
 - sdhci-tegra: Improve support for UHS cards
 - sdhci-of-arasan: Update phy support for Rockchip SoCs
 - sdhci-of-arasan: Deploy enhanced strobe support
 - dw_mmc: Some fixes and clean-ups
 - dw_mmc: Enable support for erase/discard/trim cmds
 - dw_mmc: Enable CMD23 support
 - mediatek: Some fixes related to the eMMC HS400 support
 - sh_mmcif: Improve support for HW busy detection
 - rtsx_pci: Enable support for erase/discard/trim cmds
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