mpc52xx_spi: add missing mode_bits definition

V2 changes:
* remove CS_HIGH mode

Signed-off-by: Luotao Fu <l.fu@pengutronix.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
1 file changed