tree 35b955a2c0fe2e951f8b38a0aab7db974789a24b
parent 43084a56b08b34a4daef36697dd715659a17caf9
author Jagan Teki <jagan@amarulasolutions.com> 1563796378 +0530
committer Jagan Teki <jagan@amarulasolutions.com> 1568601562 +0530

mtd: spi: Drop sf.c

spi_write_then_read, will manage to do the respective
spi_xfer based on the tx_buf, rx_buf so drop the
legacy spi_flash_read/write/cm code.

Tested-by: Adam Ford <aford173@gmail.com> #da850-evm
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>