qcacld-3.0: Refactor ACCESS_POLICY configuration

One of the HDD functions with the highest cyclomatic complexity is
__wlan_hdd_cfg80211_wifi_configuration_set(). In order to reduce the
complexity there is a plan to replace the inline attribute handling
with a vtable-based approach.

As part of that goal refactor the following interdependent attribute
handling into a separate function and add that function to the vtable:
- QCA_WLAN_VENDOR_ATTR_CONFIG_ACCESS_POLICY
- QCA_WLAN_VENDOR_ATTR_CONFIG_ACCESS_POLICY_IE_LIST

Change-Id: Ia10060a8a50b2e12f0eb7dc5ea5810f1751bce60
CRs-Fixed: 2371589
2 files changed