Yes, I believe there is a feat in divine power, channel divinity, that lets you take one channel divinity power from any class and you count as a member of that class. It works as normal, including meeting prequistes and allowing you to take channel divinity feats, except that if you don't have it as a class feature already, you can only channel divinity once per day. A way around that at epic if the revered one ed, which allows you to use all your channel divinity powers once per encounter.
Alternately because you count as a multiclass cleric you,could take one of the pps that grants cd so you could use it per encounter.