imx9: Select BINMAN at SoC level

All i.MX93 targets rely on using binman to generate the U-Boot
binary.

Select it at the SoC level instead of per board.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/imx9/Kconfig b/arch/arm/mach-imx/imx9/Kconfig
index 76c4129..961d6f5 100644
--- a/arch/arm/mach-imx/imx9/Kconfig
+++ b/arch/arm/mach-imx/imx9/Kconfig
@@ -12,6 +12,7 @@
 
 config IMX9
 	bool
+	select BINMAN
 	select HAS_CAAM
 	select ROM_UNIFIED_SECTIONS
 
@@ -29,12 +30,10 @@
 
 config TARGET_IMX93_11X11_EVK
 	bool "imx93_11x11_evk"
-	select BINMAN
 	select IMX93
 
 config TARGET_IMX93_VAR_SOM
 	bool "imx93_var_som"
-	select BINMAN
 	select IMX93
 	select IMX9_LPDDR4X