From 5.11 kernel, nla_strlcpy() is renamed to nla_strscpy() since
it works more like strscpy() than strlcpy() after the enhancement.
Hence handle it accordingly in WLAN driver by creating wrapper API
wlan_cfg80211_nla_strscpy().
Change-Id: I4c5ca1738048605c842c827d1706353bc012fed8
CRs-fixed: 3060060