hostapd(interface): Restrict channel range in ACS

This will be used to restrict channels selected by ACS.

Bug: 116839455
Test: no build errors
Signed-off-by: Daichi Ueura <daichi.ueura@sony.com>
Change-Id: I80eb81e2b13256abef41985d90c47096f6adedfd
(cherry-picked from 4ecb3b1b78d1b5b521dcc643a5c251390cc3644f)