ANDROID: GKI: db845c: add devm_register_sys_off_handler to symbol list

In commit 52b2e557 ("pinctrl: qcom: switch to
devm_register_sys_off_handler()"), the pinctrl-msm module switches to
use devm_register_sys_off_handler so this symbol needs to be added to
the db845c symbol list so it builds properly.

Fixes: 52b2e557 ("pinctrl: qcom: switch to devm_register_sys_off_handler()")
Change-Id: I3a51d3e178209bf6c88410ff7bb9eb4c274f5deb
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>