[automerger] Add EFFECT_CMD_SET_PARAM parameter checking to Downmix and Reverb am: 804632afcd am: bc1d023cc9 am: 03c1ecd9fe am: c4b06bbc1e am: 5c6acee104 am: fcc98fa3b1 am: 1f2d8b0b36

Change-Id: Ib9efffefd4952e675a13f51951a4d02f00c6abe6