[rdkb][common][hal][Refactor getRadioSupportedStandards]

[Description]
Refactor getRadioSupportedStandards, add buf string length check. Fix 6G band wrong support list.

[Release-log]
N/A

Change-Id: I66ec3070029b93e53e1e445870d5bb1a12254ee6
1 file changed
tree: cf5e9a1ae6f481db93392ff2948bf74d40bfb44f
  1. src/