wlan: Fix architecture issue with voss messaging and timers

The current usage of vos messaging does not work correctly on all
software architectures due to the overloading of certain message
fields.  Correct this by adding an explicit 'callback' field to the
vos message structure, and modify the vos timer messaging to use this
new field.

Change-Id: I952148e456da48b26d95c829c1b7fb8f35cfe364
CRs-fixed: 567258
Configure ShortGI for VHT20/40/80 in Probe or Assoc req

Advertisiment of ShortGI80MHz in probe/assoc Req is enabled or
disabled with 'gShortGI40Mhz' of ini file.

Change-Id: I3f3f5a948c3e858c00ce77728c461101e4cc84a2
CRs-fixed: 580189
Wlan: Revision 3.2.3.210a

Revision 3.2.3.210a