GENOA FW doesn't support WMI_REQUEST_LINK_STATS_CMDID. So, add this
change to disable link layer statistics for GENOA chip. This change
also fixed compilation issue without WLAN_FEATURE_LINK_LAYER_STATS.
Change-Id: Ib800c9717908767e390ccc234c577a5300f82cf2
CRs-Fixed: 2805832