Merge tag 'extcon-next-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next

Chanwoo writes:

Update extcon for 5.6

Detailed description for this pull request:
1. Remove unneeded 'extern' keyword from extcon.h header file
2. Clean-up the extcon provider
- Clean-up the code for readability of extcon-arizona/sm5502.c

* tag 'extcon-next-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon:
  extcon: Remove unneeded extern keyword from extcon.h
  extcon: sm5502: Remove unneeded semicolon
  extcon: arizona: Factor out microphone and button detection
  extcon: arizona: Factor out microphone impedance into a function
  extcon: arizona: Invert logic of check in arizona_hpdet_do_id
  extcon: arizona: Remove excessive WARN_ON
  extcon: arizona: Remove unnecessary sets of ACCDET_MODE
  extcon: arizona: Tidy up transition from mic to headphone detect
  extcon: arizona: Clear jack status regardless of detection type
  extcon: arizona: Move pdata extraction to probe
  extcon: arizona: Make rev A register sequences atomic
  extcon: arizona: Correct clean up if arizona_identify_headphone fails

Author: gregkh