allwinner: mmc: Multiple improvement

• Add a per compatible configuration struct
• Not all SoC uses the same size for DMA transfert, add this into the configuration data
• Use new timing mode for some SoC (A64 mmc)
• Auto calibrate clock for A64 mmc/emmc
• A64 mmc controller need masking of data0
• Add support for vmmc/vqmmc regulator
• Add more capabilities, r/w speed is better for eMMC
• MMC_CAP_SIGNALING_180 gives weird result so do not enable it for now.
• Add new register documented in H3/A64 user manual

Tested-On: Pine64-LTS (A64), eMMC still doesn't work
Tested-On: A64-Olinuxino (A64), sd and eMMC are working
Tested-On: NanoPi Neo Plus2 (H5), sd and eMMC are working
Tested-On: OrangePi PC2 (H5), sd only (no eMMC)
Tested-On: OrangePi One (H3), sd only (no eMMC)
Tested-On: BananaPi M2 (A31s), sd only (no eMMC)