- MMC/SDHCI: Add mmc->f_limit to allow limitation of the maximum SD clock to a value less than the input clock
- zynq_qspi: Selection between the two chips in non-linear mode is, surprisingly, done through U_PAGE bit of LQSPI_CFG and not using reserved bits in the config register.
Add CONFIG_ZYNQ_QSPI_SINGLE_FLASH that now prevents zynq-common.h from defining CONFIG_SF_DUAL_FLASH; this is necessary to allow correct detection of chip size on dual-chip configurations.
Change environment offset for zynq_q7.
Add blktest command for stress-testing block devices.