spi/bcm63xx: set master driver mode_bits.

We were not properly advertising the MODE bits supported by this driver, fix
that.

Signed-off-by: Florian Fainelli <[email protected]>
Signed-off-by: Grant Likely <[email protected]>
diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c
index 80e5ed3..7491971 100644
--- a/drivers/spi/spi-bcm63xx.c
+++ b/drivers/spi/spi-bcm63xx.c
@@ -404,6 +404,7 @@
 	master->prepare_transfer_hardware = bcm63xx_spi_prepare_transfer;
 	master->unprepare_transfer_hardware = bcm63xx_spi_unprepare_transfer;
 	master->transfer_one_message = bcm63xx_spi_transfer_one;
+	master->mode_bits = MODEBITS;
 	bs->speed_hz = pdata->speed_hz;
 	bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA));
 	bs->rx_io = (const u8 *)(bs->regs + bcm63xx_spireg(SPI_RX_DATA));