net: fm: fix spi flash probe for using driver model

The current code would always use the speed and mode set by
CONFIG_ENV_SPI_MAX_HZ and CONFIG_ENV_SPI_MODE. But if using
SPI driver model it should get the values from DT.

Signed-off-by: Gong Qianyu <Qianyu.Gong@nxp.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: York Sun <york.sun@nxp.com>

drivers/net/fm/fm.c

@@ -368,8 +368,18 @@ int fm_init_common(int index, struct ccsr_fman *reg)
 	void *addr = malloc(CONFIG_SYS_QE_FMAN_FW_LENGTH);
 	int ret = 0;
 
+#ifdef CONFIG_DM_SPI_FLASH
+	struct udevice *new;
+
+	/* speed and mode will be read from DT */
+	ret = spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
+				     0, 0, &new);
+
+	ucode_flash = dev_get_uclass_priv(new);
+#else
 	ucode_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
 			CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
+#endif
 	if (!ucode_flash)
 		printf("SF: probe for ucode failed\n");
 	else {