qcacmn: add hif_grp_irq_deconfigure bus_ops to free ext grp IRQs

As per current design, in failure path of hdd_wlan_start_modules,
mem_free of hif_ext_group is done (in cds_dp_close) before
free_irq (in hdd_hif_close), during next hdd_wlan_start_modules,
request_irq adds new handler entry to the list in irq_desc, this
leads to a crash on accessing older stale entry from irq handler,
so adding a bus_ops hif_grp_irq_deconfigure to free ext grp IRQs.

Change-Id: I4d0a2bee1fabee388cea8a85226fae641165a8d5
CRs-Fixed: 2949400