Add btif/src/btif_gatt_client::bta_gattc_event_text am: bdb07c0d am:...

Add btif/src/btif_gatt_client::bta_gattc_event_text am: bdb07c0d am: e4368fba am: bd2a293d am: 7b233ed9

Original change: https://android-review.googlesource.com/c/platform/system/bt/+/1496555

Change-Id: I0f38d7810c4f1b41ca3d6246e99d161bc7d511b5