spi: cadence_quadspi: Enable QUAD mode based on DT data

Instead of relying on CONFIG_SPI_FLASH_QUAD to be defined to enable QUAD
mode, make use of mode_rx field of dm_spi_slave_platdata to determine
whether to enable or disable QUAD mode. This is necessary to support
muliple SPI controllers where one of them may not support QUAD mode.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Marek Vasut <marex@denx.de>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagan Teki <jteki@openedev.com>
diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
index 4f7fd52..a5244ff 100644
--- a/drivers/spi/cadence_qspi.c
+++ b/drivers/spi/cadence_qspi.c
@@ -191,6 +191,7 @@
 	struct udevice *bus = dev->parent;
 	struct cadence_spi_platdata *plat = bus->platdata;
 	struct cadence_spi_priv *priv = dev_get_priv(bus);
+	struct dm_spi_slave_platdata *dm_plat = dev_get_parent_platdata(dev);
 	void *base = priv->regbase;
 	u8 *cmd_buf = priv->cmd_buf;
 	size_t data_bytes;
@@ -250,7 +251,7 @@
 		break;
 		case CQSPI_INDIRECT_READ:
 			err = cadence_qspi_apb_indirect_read_setup(plat,
-				priv->cmd_len, cmd_buf);
+				priv->cmd_len, dm_plat->mode_rx, cmd_buf);
 			if (!err) {
 				err = cadence_qspi_apb_indirect_read_execute
 				(plat, data_bytes, din);