title: How to select the value of a string option from another option in Kbuild Kconfig files?
body: <p>For Boolean config, I am using select. Is there a similar one for string?</p>
  
  <p>Eventually, I would like to have something like:</p>
  
  <pre><code>config MY_VAR_STR
  string
  
  config MY_VAR_BOOL
  bool
  default n
  
  config OPTION_2
  bool
  # Set MY_VAR_BOOL value to y
  select MY_VAR_BOOL
  # something like set MY_VAR "test string"
  </code></pre>