MMC core:
 - Enable host caps to be modified via debugfs to test speed-modes
 - Improve random I/O writes for 4k buffers for hsq enabled hosts

MMC host:
 - atmel-mci/sdhci-of-at91: Aubin Constans takes over as maintainer
 - dw_mmc-starfive: Re-work tuning support
 - meson-gx: Fix bogus IRQ when using CMD_CFG_ERROR
 - mmci: Use peripheral flow control for the STM32 variant
 - renesas,sdhi: Add support for the RZ/G3S variant
 - sdhci-esdhc-imx: Optimize the manual tuning logic
 - sdhci-msm: Add support for the SM8650 variant
 - sdhci-npcm: Add driver to support the Nuvoton NPCM BMC variant
 - sdhci-pci-gli: Add workaround to allow GL9750 to enter ASPM L1.2
mmc: Merge branch fixes into next

Merge the mmc fixes for v6.6-rc[n] into the next branch, to allow them to
get tested together with the new mmc changes that are targeted for v6.7.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>