The value of tmnxPtpClockProfile specifies the conformance of the PTP
system to either the default IEEE 1588-2008 behavior, or the ITU-T
profile.
Modification of this object indirectly resets the value of
tmnxPtpClockDomain to the corresponding default value for the specified
profile.
This object can only be modified if tmnxPtpClockAdminState is
set to 'outOfService (3)', otherwise an 'inconsistentValue' error is
returned.