armv8: ls2085a: Add support of random MAC address

Add support of setting RANDOM MAC address if env variable not available.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: York Sun <yorksun@freescale.com>

configs/ls2085a_simu_defconfig

@@ -12,3 +12,4 @@ CONFIG_SYS_EXTRA_OPTIONS="SIMU"
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NFS is not set
 # CONFIG_CMD_MISC is not set
+CONFIG_NET_RANDOM_ETHADDR=y

configs/ls2085aqds_defconfig

@@ -7,6 +7,7 @@ CONFIG_DEFAULT_DEVICE_TREE="fsl-ls2085a-qds"
 CONFIG_SYS_EXTRA_OPTIONS="SYS_FSL_DDR4"
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_OF_CONTROL=y
+CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_DM=y
 CONFIG_NETDEVICES=y
 CONFIG_E1000=y

configs/ls2085aqds_nand_defconfig

@@ -3,5 +3,6 @@ CONFIG_TARGET_LS2085AQDS=y
 CONFIG_SPL=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_FSL_DDR4,NAND"
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_NETDEVICES=y
 CONFIG_E1000=y

configs/ls2085ardb_defconfig

@@ -7,6 +7,7 @@ CONFIG_DEFAULT_DEVICE_TREE="fsl-ls2085a-rdb"
 CONFIG_SYS_EXTRA_OPTIONS="SYS_FSL_DDR4"
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_OF_CONTROL=y
+CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_DM=y
 CONFIG_NETDEVICES=y
 CONFIG_E1000=y

configs/ls2085ardb_nand_defconfig

@@ -3,5 +3,6 @@ CONFIG_TARGET_LS2085ARDB=y
 CONFIG_SPL=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_FSL_DDR4,NAND"
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_NETDEVICES=y
 CONFIG_E1000=y