imx8mm_evk: switch to use binman to pack images

Use binman to pack images

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig
index e7e1315..d9a99e9 100644
--- a/arch/arm/mach-imx/imx8m/Kconfig
+++ b/arch/arm/mach-imx/imx8m/Kconfig
@@ -40,6 +40,7 @@
 
 config TARGET_IMX8MM_EVK
 	bool "imx8mm LPDDR4 EVK board"
+	select BINMAN
 	select IMX8MM
 	select SUPPORT_SPL
 	select IMX8M_LPDDR4