mmc: mediatek: add MT8183 MMC driver support

[Chaotian Jing]

this series of patch include below changes:
1. Add MT8183 SoC support in Mediatek MMC DT bindings
2. Fill mmc->actual_clock
3. Fix cannot receive new request issue
4. Tune CMD/DATA together to save tuning time
5. Add MT8183 MMC driver support
6. Refine the tuning method to drop too much redundant code

Chaotian Jing (6):
  mmc: dt-bindings: add support for MT8183 SoC
  mmc: mediatek: fill the actual clock for mmc debugfs
  mmc: mediatek: fix cannot receive new request when msdc_cmd_is_ready
    fail
  mmc: mediatek: tune CMD/DATA together
  mmc: mediatek: add MT8183 MMC driver support
  mmc: mediatek: drop too much code of tuning method

 Documentation/devicetree/bindings/mmc/mtk-sd.txt |   1 +
 drivers/mmc/host/mtk-sd.c                        | 292 ++++++++++++++++++++---
 2 files changed, 254 insertions(+), 39 deletions(-)

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1.8.1.1.dirty