Move camera workaround to 8974-common

* Only 8974 devices need it, makes no sense to have it
  here now that we have a msm8974-common

This reverts commit eca61b42fe43cfd7a2573dd035a4389b2eff248f

Change-Id: Icc37f821077dac00bf00b1eeb0a60bca700def7d