net: Remove all calls to net_random_ethaddr()

Remove the calls to net_random_ethaddr() that some boards and some
drivers are calling. This is now implemented inside of net/eth.c

Enable the feature for all boards that previously enabled it.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-By: Michael Walle <michael@walle.cc> (for the lsxl board part)

Series-changes: 2
-Fixed bfin build errors
diff --git a/configs/lschlv2_defconfig b/configs/lschlv2_defconfig
index efd8fca..31452a3 100644
--- a/configs/lschlv2_defconfig
+++ b/configs/lschlv2_defconfig
@@ -1,4 +1,6 @@
 CONFIG_ARM=y
 CONFIG_KIRKWOOD=y
 CONFIG_TARGET_LSXL=y
+CONFIG_NET=y
 CONFIG_SYS_EXTRA_OPTIONS="LSCHLV2"
+CONFIG_NET_RANDOM_ETHADDR=y