imx: mx6ull-14x14-evk: enable DM QSPI driver

To support QSPI DM driver
 - Add spi0 alias for qspi node. Which is used for bus number 0.
 - Modify the n25q256a@0 compatible property to "spi-flash".
 - Modify spi4 (gpio_spi) node to spi5
 - Define DM SPI/QSPI related config to enable QSPI

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/include/configs/mx6ullevk.h b/include/configs/mx6ullevk.h
index 8787df4..6a48742 100644
--- a/include/configs/mx6ullevk.h
+++ b/include/configs/mx6ullevk.h
@@ -164,4 +164,14 @@
 
 #define CONFIG_SOFT_SPI
 
+#ifdef CONFIG_FSL_QSPI
+#define CONFIG_SYS_FSL_QSPI_AHB
+#define CONFIG_SF_DEFAULT_BUS		0
+#define CONFIG_SF_DEFAULT_CS		0
+#define CONFIG_SF_DEFAULT_SPEED	40000000
+#define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
+#define FSL_QSPI_FLASH_NUM		1
+#define FSL_QSPI_FLASH_SIZE		SZ_32M
+#endif
+
 #endif