Problem:
For JAPAN_48 country, channel list does not show frequency 4912, 4915,
4917 and 4920. This is because FW sends low limit 5g as 4912 which is
a center frequency of 4.9GHz channel. In the current implementation,
Host finds the low 5GHz edge frequency by subtracting 10 from channel
center frequency. For example, channel center frequency is 4912 after
subtracting 10 the low 5GHz edge frequency is 4910. Since 4910 is less
than FW low limit 5GHz (4912), Host discards 4912 frequency from it's
channel list.
Solution:
FW should send low limit 5GHz as 4910 to consider 4912 as low 5GHz edge
frequency and Host should use min and max bandwidth from regulatory
channel to calculate low 5GHz edge frequency.
Change-Id: Ib712bd6ff091a385c7dc95832f9c771e34100211
CRs-Fixed: 2124135
f2e0ad8d0f