Enable Cadence QSPI controller support to use QSPI on K2G SoC. Also
enable Spansion flash support to access s25fl512s flash present on K2G
QSPI bus.
Signed-off-by: NVignesh R <vigneshr@ti.com>
Reviewed-by: NTom Rini <trini@konsulko.com>
Reviewed-by: NJagan Teki <jteki@openedev.com>