qcacld-3.0: Validate device mode before setting LL_STATS

LL_STATS is supported only for STA mode and currently no check
is present to validate the device mode while setting the LL_STATS
from the vendor command.

Allow LL_STATS to be set from the vendor command only for STA mode.

Change-Id: I40e9a6beb20524a84d87105455fe9b28cdc50816
CRs-Fixed: 2266936
1 file changed