spi: cadence_qspi: Use spi mode at the point it is needed

Instead of extracting mode settings and passing them as separate
args to another function, just pass the SPI mode as an arg.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
3 files changed