epicmtd: add ffmpeg codecs.

Change-Id: I7730cd2ab2a4cf15ecb2cbcd517d1608dcafaba2
epicmtd: libcamera: don't error when disabling focus move callback

We don't support it, but we shouldn't error out when someone tries to
disable it either. Required to support video mode on Google Camera

Change-Id: I09150b4491614f4618619ddc77780a71840a296c