i.MX6: nand: extend nandbcb command for imx6UL(L)

Firmware Configuration Block(FCB) for imx6ul(l) needs to be
BCH encoded.

Signed-off-by: Parthiban Nallathambi <pn@denx.de>
Acked-by: Shyam Saini <shyam.saini@amarulasolutions.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index b0b9d2c..4a2f39b 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -81,6 +81,7 @@
 config CMD_NANDBCB
 	bool "i.MX6 NAND Boot Control Block(BCB) command"
 	depends on NAND && CMD_MTDPARTS
+	select BCH if MX6UL || MX6ULL
 	default y if ARCH_MX6 && NAND_MXS
 	help
 	  Unlike normal 'nand write/erase' commands, this command update