Revert "net: wireless: bcmdhd: ignore hang event during shutown"

Revert "net: wireless: bcmdhd: ignore hang event during shutown"

This reverts commit b9a667f961c73156d27ae1de32486564144e090d.
Shutdown handler change is reverted, this change is no longer required

bug 200247693

Change-Id: I389098a8706602a5ba66ae04ee7a60868754dbd0
Signed-off-by: Manikanta <mmaddireddy@nvidia.com>
Reviewed-on: http://git-master/r/1256450
Reviewed-by: Narayan Reddy <narayanr@nvidia.com>
Reviewed-by: Bhadram Varka <vbhadram@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>