Add gerrit settings
Add gerrit settings

Make it simple to setup and use this repo with 'git review' command.

Change-Id: I6bbe65cc09e086685995f084a07a646a7d60b93c

ttsou/osmo-trx,osmocom/osmo-trx,osmocom/osmo-trx,osmocom/osmo-trx,ttsou/osmo-trx,osmocom/osmo-trx,ttsou/osmo-trx,ttsou/osmo-trx