qcacmn: Do not call sleeping API from atomic context

WMI unified detach holds spin lock bh and calls kernel API
to remove debugfs directory. Remove debug fs kernel API uses
mutex for internal synchronization and hence kernel complains
WLAN is calling sleeping API from non sleeping context. Fix this
issue by keeping debug fs remove API call outside spin lock bh
protection.

Change-Id: I15d9a3735ed3c914af51aed9885f48f9c1d1ded2
CRs-Fixed: 1021379
1 file changed