spi: nxp-fspi: add octal mode flag bit for octal support

Add octal mode flags for octal I/O data transfer support.
NXP FlexSPI controller supports 8 lines Rx/Tx data transfer.
Signed-off-by: NYogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/spi/spi-nxp-fspi.c

@@ -953,8 +953,8 @@ static int nxp_fspi_probe(struct platform_device *pdev)
 	if (!ctlr)
 		return -ENOMEM;
 
-	ctlr->mode_bits = SPI_RX_DUAL | SPI_RX_QUAD |
-			  SPI_TX_DUAL | SPI_TX_QUAD;
+	ctlr->mode_bits = SPI_RX_DUAL | SPI_RX_QUAD | SPI_RX_OCTAL |
+			  SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL;
 
 	f = spi_controller_get_devdata(ctlr);
 	f->dev = dev;