[dv] Use sed to add -elfile for each excl file
[dv] Use sed to add -elfile for each excl file

Address Sri's comment at #8195
Signed-off-by: Weicai Yang <4fa8c7762ee4da95e3dee7dae2c3263ea16637f9@google.com>

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