spi: dw: drop unused struct dw_spi field

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/spi/spi-dw.c

@@ -427,7 +427,6 @@ static void pump_transfers(unsigned long data)
 	dws->tx_end = dws->tx + transfer->len;
 	dws->rx = transfer->rx_buf;
 	dws->rx_end = dws->rx + transfer->len;
-	dws->cs_change = transfer->cs_change;
 	dws->len = dws->cur_transfer->len;
 	if (chip != dws->prev_chip)
 		cs_change = 1;

drivers/spi/spi-dw.h

@@ -135,7 +135,6 @@ struct dw_spi {
 	u8			n_bytes;	/* current is a 1/2 bytes op */
 	u8			max_bits_per_word;	/* maxim is 16b */
 	u32			dma_width;
-	int			cs_change;
 	irqreturn_t		(*transfer_handler)(struct dw_spi *dws);
 	void			(*cs_control)(u32 command);