ARM: imx: Add bmode support for iMX7

Add the basic differentiation between i.MX6 and i.MX7 into the bmode
command, the mechanism really works almost the same on both platforms.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP i.MX U-Boot Team <uboot-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 1531d09..8f64e23 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -62,7 +62,7 @@
 config CMD_BMODE
 	bool "Support the 'bmode' command"
 	default y
-	depends on ARCH_MX6 || ARCH_MX5
+	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX5
 	help
 	  This enables the 'bmode' (bootmode) command for forcing
 	  a boot from specific media.