marvel: Disable copying libcamera to obj

So we can copy a prebuilt camera.msm7x27 without a build error

Change-Id: I16785bd6b6a6bce4a924704bd885836191d391e7
msm7x27-common: Add prebuilt camera.msm7x27

Change-Id: I3c9df654060f1426824ea033f87e6718b5cded2a