dts: imx8mp: assign binman_configuration label to config-SEQ

assign a label for config-SEQ so that the board dts can modify
the configuration more easily.

Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP i.MX U-Boot Team <uboot-imx@nxp.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
diff --git a/arch/arm/dts/imx8mp-u-boot.dtsi b/arch/arm/dts/imx8mp-u-boot.dtsi
index f9883aa..cb9b5b6 100644
--- a/arch/arm/dts/imx8mp-u-boot.dtsi
+++ b/arch/arm/dts/imx8mp-u-boot.dtsi
@@ -148,7 +148,7 @@
 			configurations {
 				default = "@config-DEFAULT-SEQ";
 
-				@config-SEQ {
+				binman_configuration: @config-SEQ {
 					description = "NAME";
 					fdt = "fdt-SEQ";
 					firmware = "uboot";