hostapd(hidl): Only enable HT40 for ACS

For non-ACS configuration, we cannot enable HT40 since framework does
not know if the channel it selected is HT/VHT capable.

Bug: 74257902
Test: Verified hostapd.conf on both marlin & taimen.
Change-Id: Ied484636597f29a497df83c7e4df69ede3fd6302
1 file changed