defconfig: Disable OCMEM on msm8610

OCMEM is not available on msm8610. The config was enabled
because the config files were shared between msm8610 and msm8226.
As the config files have been split now, OCMEM should be disabled
on msm8610.

Change-Id: Ica9ab741b152faca9e08f053156b5ff747e3d306
Signed-off-by: Neeti Desai <neetid@codeaurora.org>