spi: Rename op_mode_rx to mode_rx

Since spi rx mode macro's are renamed to simple and
meaninfull, this patch will rename the respective
structure members.

Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Tested-by: Mugunthan V N <mugunthanvnm@ti.com>
Tested-by: Jagan Teki <jteki@openedev.com>
Signed-off-by: Jagan Teki <jteki@openedev.com>
diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c
index 7f41763..59eaaea 100644
--- a/drivers/spi/ich.c
+++ b/drivers/spi/ich.c
@@ -752,7 +752,7 @@
 	 * and byte program command for SST flash
 	 */
 	if (plat->ich_version == 7) {
-		slave->op_mode_rx = SPI_RX_SLOW;
+		slave->mode_rx = SPI_RX_SLOW;
 		slave->mode = SPI_TX_BYTE;
 	}