Network package timestamping is optional for TSF feature,
to make it configurable, add a new build flag
WLAN_FEATURE_TSF_PLUS_SOCK_TS.
This flag will be set only when CONFIG_WLAN_SYNC_TSF_PLUS
is enabled and CONFIG_WLAN_SYNC_TSF_PLUS_DISABLE_SOCK_TS
is not.
Change-Id: I413e85fadf93264cd41c2739b6d870aa08d60efb
CRs-Fixed: 3027378