Revert "Camera: Support obtaining camera memory from MemoryHeapIon"

This reverts commit afd69c429280e391b81732e95e28450bb88b2e4f.
av: samsung's patch for exynos5410 support

Change-Id: I3795feada76896a0503c29845a2537e67aa9d91e
Merge remote-tracking branch 'Alberto96/cm-11.0' into cm-11.0