console_output: Clarify help text for CONFIG_CONSOLE_CHANNEL
BRANCH=poppy
TEST=N/A
* Make it possible for console to be output to different channels that can be
* turned on and off.
*
- * Boards that do not require a typical FAFT flow may #undef this to reduce
- * image size.
+ * This is useful as a developer convenience when the console is crowded with
+ * messages, to make it easier to use the interactive console.
+ * FAFT and servod also use this feature.
+ *
+ * Boards may #undef this to reduce image size.
*/
#define CONFIG_CONSOLE_CHANNEL
