wlan: Check to not cache frames in a SAP session.

Currently we cache frames in a softap session but do not forward it.
So adding check in WLANTL_RxFrames so that frames are not cached in
a softap session.

Change-Id: I5261aabb49d4bde619664a0f681127b580a65da2
CRs-Fixed: 650054
wlan: wda: Null pointer check for invalid vos packet

Add a null pointer check for WDA_CFG_RXP_FILTER_REQ
in WDA agaist packet received from SME.
This is preventive fix.

Change-Id: I4abe44b56cf0499798baecc9e3ea10d706f270cf
CRs-Fixed: 647410
wlan: Avoid abort due to access of deinitialised socket

If driver initialization fails after nl initialization,
driver tries to stop PE by posting the message to MC
thread which in turn tries to send a message to the
ptt App, by this time the socket would have been
de-initialized due to which abort occurs.

Avoid sending any message during load unload in progress.
Reduce the min number of logging buffers to support low
memory devices and use vmalloc instead for logging buffer
allocation.

Change-Id: Ifdcd6ef0d92f0a68d03193070057a67818371674
CRs-Fixed: 652067
wlan: Revision 3.2.3.304

Revision 3.2.3.304

Change-Id: I9e1ef800d1fc8a373dbf5074895361e3a6f69d15
CRs-Fixed: 652593