Merge tag 'extcon-fixes-for-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel...

Chanwoo writes:

Update extcon for v5.12-rc4

Detailed update of this pull request as following:
1. Add stubs of extcon_register_notifier_all() function for when
CONFIG_EXTCON is disabled.

2. Fix exception handling in extcon_dev_register() when failed to
initialize the extcon device.

* tag 'extcon-fixes-for-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon:
  extcon: Fix error handling in extcon_dev_register
  extcon: Add stubs for extcon_register_notifier_all() functions