wifihal: Guard Link Layer Stats operations with feature flag

Some driver may not support Link Layer Stats, so guard Link Layer
Stats operations with WIFI_FEATURE_LINK_LAYER_STATS feature flag.

CRs-Fixed: 2806660
Change-Id: If711f6e4cfa94558e73be3c72be5a9091fe8bd6e
1 file changed
tree: d19ce86cbdaf4d77ed208ee9ae4b47190827d75c
  1. cld80211-lib/
  2. qcwcn/
  3. wcnss-service/
  4. Android.mk