connman: backport patch to fix autoscan behaviour

:Release Notes:
Adding a patch to fix a bug within connman 1.12 which refuses connman to
enable autoscan functionality at wpa-supplicant.

:Detailed Notes:
Due to a bug within the interface creation handling the autoscan
functionality within wpa-supplicant never were correctly configured so
after some time all found networks where removed from an internal list
within wpa-supplicant as the self implemented autoscan functionality
within connman comes to late to refresh all found networks. Only the
autoscan functionality implemented within wpa-supplicant can take care
about refreshing all listed networks correctly. With this patch applied
connman now reports all really available networks correctly over time
without signalling that some of them where not available for short
timeframes.

:Testing Performed:
* Tested locally with connman 1.12 / wpa-supplicant 2.0

:QA Notes:
Depends on the following other changes at runtime to verify that the
issue described in GF-7727 is fixed:
* https://g2g.palm.com/#/c/2785/
* https://gpro.palm.com/#/c/5872/

:Issues Addressed:
[GF-7727] Wifi service returns {"returnValue":true}, but without network info
[GF-8334] CCC: connman=webos2

Open-webOS-DCO-1.0-Signed-off-by:Simon Busch <simon.busch@lge.com>

Change-Id: I651665c76e73a426b2b0beb3a9cc7898227d06a0
Reviewed-on: https://g2g.palm.com/2789
Reviewed-by: Build Verification
Tested-by: Simon Busch <simon.busch@lge.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>