removing icmpv6router as RADVs are not needed anymore. Solves issue FW-65
Merge branch 'develop' into develop_FW-2

Conflicts:
	firmware/openos/drivers/common/openserial.c
	firmware/openos/openwsn/03b-IPv6/icmpv6router.c
	firmware/openos/openwsn/03b-IPv6/icmpv6router.h