use `Utils` namespace in ax88179.rb

also re-order stanzas
use `Utils` namespace in ax88772.rb

also re-order stanzas
use `Utils` namespace in mcs783x.rb

also re-order stanzas
use `Utils` namespace in sts.rb
Merge pull request #6534 from rolandwalker/utils_namespace

use `Utils` namespace in 4 Casks