Wifi-Hal: Avoid to parse of unknown packet type on SW event.

Currently on receiving of PKTLOG_TYPE_PKT_SW_EVENT, it parse
packet log which are of different sub-types and sub-type '1'
indicates TX packet type. It parse TX packet logs till reach
to its ZERO length in a loop. If it is receive sub-type apart
from TX pkt type, which makes wifi_event_loop stuck in user_socket
event.

On receiving of SW_EVENT, avoid to parse pkt log apart from
TX packet type so that wifi_event_loop can received other socket
msg and socket events.

Change-Id: I23e256f682138b39b12fe35f3d8cbda5a26b7dc2
CRs-Fixed: 2563190