Added tag v2.9.4 for changeset f9a8a52f3b55
Module inherits new functionality for RTM DC offseting from sis8300drv.
Added tag v2.6.0 for changeset 9ee76fd8498d
Permits attenuator parameterisation in all NDS states other than OFF.
IOC functions for VM output "enable cmd" and "attenuator parameterisation".
Removes unused variables from AI Channel configuration.
Adds support for modifying RTM attenuator values via FPGA registers.
Permits sample sizes in multiples of 32 only for alignment reasons when accessing RAM of digitiser.