configs: Migrate CORTINA_FW_ADDR and CORTINA_FW_LENGTH to Kconfig

Use moveconfig.py script to convert below defines to Kconfig and move
these entries to defconfigs.
    CONFIG_CORTINA_FW_ADDR
    CONFIG_CORTINA_FW_LENGTH

Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/configs/T4240RDB_defconfig b/configs/T4240RDB_defconfig
index abb2137..14594b0 100644
--- a/configs/T4240RDB_defconfig
+++ b/configs/T4240RDB_defconfig
@@ -45,6 +45,7 @@
 CONFIG_PHYLIB=y
 CONFIG_PHYLIB_10G=y
 CONFIG_PHY_CORTINA=y
+CONFIG_CORTINA_FW_ADDR=0xefe00000
 CONFIG_PHY_TERANETICS=y
 CONFIG_PHY_VITESSE=y
 CONFIG_DM_ETH=y