Fix side branch build breakage.

Some branch is complaining:
error: undefined reference to 'android::hardware::power::V1_0::IPower::unlinkToDeath(android::sp<android::hardware::hidl_death_recipient> const&)'

Test: N/A
Test: works on master branch
Change-Id: Ifbd47fd47312e02e25eb326f374c71c7dceb2944