Add multi-client latency level service bit capability support,
WLAN_SOC_WLM_MULTI_CLIENT_LL_SUPPORT, to check whether the FW
supports multi-client latency level event or not.
Add INI "wlm_multi_client_ll feature" to enable/disable multi
client latency level feature from the host side.
* @min: 0
* @max: 1
* @default: 0
If firmware sends multi-client latency level service
bit capability to host and host enables multi-client latency
level feature via INI, the host waits for an event
WMI_VDEV_LATENCY_LEVEL_EVENTID as a response to a request
command WMI_WLM_CONFIG_CMDID.
Change-Id: I5cbea89e67caabac5db70b7f0a91c18bdd512e9b
CRs-Fixed: 3180928