extcon: Add stubs for extcon_register_notifier_all() functions
Add stubs for extcon_register_notifier_all() function for !CONFIG_EXTCON case. This is useful for compile testing and for drivers which use EXTCON but do not require it (therefore do not depend on CONFIG_EXTCON). Fixes: 815429b3 ("extcon: Add new extcon_register_notifier_all() to monitor all external connectors") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
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