smdk4412: Import changes for mfc driver from latest n8000 KK sources

Change-Id: Ife764f21f8cea9d0f6b3aae3436fcb7a4d07f403
smdk4412: Fix MFC memory allocation causing not working video camera and broken hardware decoders/encoders

Change-Id: If67eeda950b2147634a3b91700ee269d607d5687