Add support for NXP FlexSPI Flash Programming, i.MXRT1020. Add support for NAND Flash with 256 bytes ECC. AT45 DataFlash: fix bug where 528 byte page is detected as 512 byte.…

T1040: fix bug where read from slow memory (NOR Flash) at 16-20MHz JTAG clock is not stable. T1040: fix bug where the agent ping is unstable.

NOR Flash: fix a bug when programming images smaller then the NOR Flash buffer size.

fix a problem with PPC440 ‘mem test’ – add printing of the failed address PPC440 – fix TLB write NOR Flash: fix a problem when reading CFI on some devices…