snmp: For WR extension, wrsPtpRTT is set with rawDelayMM
wr_mon: For WR extension, the value of delayMM displayed correspond to rawDelayMM

This field is set now to NA if the local leap second file is used

Since driver reads periodically MDIO registers (timer function to check
link state) and HAL reads periodically LPDC MDIO registers (through
ioctl call) it happened once in a while that ioctl read operation would be
interleaved with timer function. As a result HAL would get the value
read from a different MDIO register than the one requested. This had
caused occasional link restarts on LPDC ports.

The script files have been moved in host_tools directory.

- New script to generate the VLAN kconfig
- Allows raw configuration for vlan ports
- New key for PTP VID

acking branch 'origin/jcb-proposed_master' into proposed_master

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