power: Don't hint if previous duration covers current duration

Don't hint if previous duration covers current duration, since new short
boost may interrupt previous long boost

Partially revert commit I977e844935539a4598a749c77f4c0934ca93a2b7 (power: Ignore
interaction boost sequence in a short period)

Change-Id: Ia2c824683ab148b2bf4d2859cb58e5c2721abe8d
1 file changed