Update AU915-928 sub frequency channels

[kbeaugrand]

Description

What's new?

• Fix Bug: Wrong frequencies in AU915 FSB 2 #2194

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Tests
• Other

[kbeaugrand]

@adcoly,

As discussed together, I updated the frequency bands in radio configuration to match the documentation.
Please find below the expected frequencies:

Please let me know if I'm doing wrong.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (b7833f1) 92.39% compared to head (eba327d) 92.39%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2236   +/-   ##
=======================================
  Coverage   92.39%   92.39%           
=======================================
  Files         277      277           
  Lines        9129     9129           
=======================================
  Hits         8435     8435           
  Misses        694      694           

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[kbeaugrand]

Discussed internally frequencies for AU915 should be;

FSB 1

Channel	Frequency (GHz)
Chanel 1	915.2
Chanel 2	915.4
Chanel 3	915.6
Chanel 4	915.8
Chanel 5	916.0
Chanel 6	916.2
Chanel 7	916.4
Chanel 8	916.6

FSB 2

Channel	Frequency (GHz)
Chanel 1	916.8
Chanel 2	917.0
Chanel 3	917.2
Chanel 4	917.4
Chanel 5	917.6
Chanel 6	917.8
Chanel 7	918.0
Chanel 8	918.2

FSB 3

Channel	Frequency (GHz)
Chanel 1	918.4
Chanel 2	918.6
Chanel 3	918.8
Chanel 4	919.0
Chanel 5	919.2
Chanel 6	919.4
Chanel 7	919.6
Chanel 8	919.8

FSB 4

Channel	Frequency (GHz)
Chanel 1	920.0
Chanel 2	920.2
Chanel 3	920.4
Chanel 4	920.6
Chanel 5	920.8
Chanel 6	921.0
Chanel 7	921.2
Chanel 8	921.4

FSB 5

Channel	Frequency (GHz)
Chanel 1	921.6
Chanel 2	921.8
Chanel 3	922.0
Chanel 4	922.2
Chanel 5	922.4
Chanel 6	922.6
Chanel 7	922.8
Chanel 8	923.0

FSB 6

Channel	Frequency (GHz)
Chanel 1	923.2
Chanel 2	923.4
Chanel 3	923.6
Chanel 4	923.8
Chanel 5	924.0
Chanel 6	924.2
Chanel 7	924.4
Chanel 8	924.6

FSB 7

Channel	Frequency (GHz)
Chanel 1	924.8
Chanel 2	925.0
Chanel 3	925.2
Chanel 4	925.4
Chanel 5	925.6
Chanel 6	925.8
Chanel 7	926.0
Chanel 8	926.2

FSB 8

Channel	Frequency (GHz)
Chanel 1	926.4
Chanel 2	926.6
Chanel 3	926.8
Chanel 4	927.0
Chanel 5	927.2
Chanel 6	927.4
Chanel 7	927.6
Chanel 8	927.8