wlan: Add support to get rssi in case of disconnect.

LOST LINK PARAMS IND is sent by FW to Host which has the
rssi of the last beacon received from AP.This indication
is sent in the below scenarios.
1) When host sends the Delbss, FW will send this indication
with the RSSI.
2) FW will send this indication along with the beaon miss
indication.
3) Rssi is cached from the deauth/Disassoc from the AP.

This RSSI is cached in pAdapter.When user issues getRssi ioctl,
then this RSSI will be sent to user if STA is in disconnect
state.

Change-Id: If42830f617b646fd524eee9dc6f8c81f4f707dcd
CRs-Fixed: 898495
25 files changed
tree: 34e053146689d678ba737b919974893a32216d96
  1. CORE/
  2. firmware_bin/
  3. riva/
  4. Android.mk
  5. Kbuild
  6. Kconfig
  7. Makefile