ARM: imx: display5: config: Update display5_factory_defconfig to use USE_BOOTCOMMAND

This commit switch display5_factory_defconfig to use new, generic
USE_BOOTCOMMAND Kconfig option.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
diff --git a/configs/display5_factory_defconfig b/configs/display5_factory_defconfig
index 60215f8..b65485f 100644
--- a/configs/display5_factory_defconfig
+++ b/configs/display5_factory_defconfig
@@ -11,6 +11,8 @@
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/spl_sd.cfg,MX6Q"
 CONFIG_BOOTDELAY=3
+CONFIG_USE_BOOTCOMMAND=y
+CONFIG_BOOTCOMMAND="run factory"
 CONFIG_SPL=y
 # CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
 # CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR is not set