msm_serial_hs: add irq number in wakelock name

When bluetooth and audio both use hsuart, they have different ports and
wakelocks. However, wakelocks share same name which makes debugging
difficult. Put irq number in wakelock name to tell actual hsuart client.

Bug: 22014761

Change-Id: I1f0e2540cf332529ed7091086ddd2161d0158834