Reland "hostapd: donot process 2.4ghz probe requests"

This reverts commit 8fbe25ac02942ba3b6c39b615cb2325f7a0c1e19.

Reason for revert: the Mistral patch to populate 2.4GHz probe request was reverted due to regression in b:146569345. Reland this hostapd WAR so that Mistral could recognize dual band capable clients. See b:151800186#comment8 for more context.

Original change's description:
> Revert "hostapd: donot process 2.4ghz probe requests"
>
> This reverts commit 5c61cc49e9cfc2498784edf78c7577695e468628.
>
> Reason for revert: b:139151531 Remove the WAR since the issue of populating
> 2.4GHz probe request has been fixed. Verify hostapd receive 2.4GHz probe
> reqeust and dual_band_capable field is marked correctly.
>
> Original change's description:
> > hostapd: donot process 2.4ghz probe requests
> >
> > some of Google WiFi products firmware doesn't populate 2.4ghz probe
> > request info to user space which is required to decide station band
> > capability. As a work around, mark station as the dual band capable
> > if 5ghz probe request info of station are available.
> >
> > BUG=b:139151531
> > TEST=1) Build for Google WiFi products
> >      2) Connect a station to Google WiFi and confirm from logs
> >
> > Change-Id: Ib5e2b35992734b1037929564426ce778430e4cf1
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/hostap/+/1749556
> > Reviewed-by: Julan Hsu <julanhsu@google.com>
> > Reviewed-by: Ramya Bhagavatula <rbhagavatula@chromium.org>
> > Reviewed-by: Brian Norris <briannorris@chromium.org>
> > Tested-by: NARAYANRADDI MASTI <nmasti@google.com>
> > Commit-Queue: NARAYANRADDI MASTI <nmasti@google.com>
>
> Bug: b:139151531
> Change-Id: I1fae46541da0b4e5ae1474866f15aa3e518791b4
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/hostap/+/1806059
> Tested-by: Roy Luo <royluo@google.com>
> Reviewed-by: Julan Hsu <julanhsu@google.com>
> Reviewed-by: Julan Hsu <julanhsu@chromium.org>
> Commit-Queue: Roy Luo <royluo@google.com>

Bug: b:139151531
Change-Id: I23e3e3c96cad2e5eeef55a218caae044885532f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/hostap/+/2891401
Tested-by: Roy Luo <royluo@google.com>
Reviewed-by: Eric Caruso <ejcaruso@chromium.org>
Reviewed-by: Srinivasa duvvuri <sduvvuri@google.com>
Commit-Queue: Roy Luo <royluo@google.com>
1 file changed