[tlul] Add inactive lane mask checker for Get
[tlul] Add inactive lane mask checker for Get

Get also requires to conform `a_mask` inactive lane to be 0.
Now, the condition for Get is also added

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan