Merge branch 'master' of https://gitlab.denx.de/u-boot/custodians/u-boot-spi

- fix for fsl_qspi read timeout (Thomas)
- spi-mem read data size fix (Ye Li)
- SiFive SPI driver, mmc_spi flags (Bhargav, Anup)
- Micron spi-nor parts (Ashish)
- MT7629 spi-mem driver(Weijie)