armv8: ls2080: Add mcinitcmd env variable in default env

Define mcinitcmd env variable to load Management complex during
u-boot boot sequence.

Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/include/configs/ls2080ardb.h b/include/configs/ls2080ardb.h
index 356d254..b2c0181 100644
--- a/include/configs/ls2080ardb.h
+++ b/include/configs/ls2080ardb.h
@@ -327,7 +327,9 @@
 	"initrd_high=0xffffffffffffffff\0"	\
 	"kernel_start=0x581100000\0"		\
 	"kernel_load=0xa0000000\0"		\
-	"kernel_size=0x2800000\0"
+	"kernel_size=0x2800000\0"		\
+	"mcinitcmd=fsl_mc start mc 0x580300000"	\
+	" 0x580800000 \0"
 
 #undef CONFIG_BOOTARGS
 #define CONFIG_BOOTARGS		"console=ttyS1,115200 root=/dev/ram0 " \