ARC: Revert "ARC: mm: IOC: Don't enable IOC by default"

The programming model has been fixed with prev patches so re-enable it
by default

This reverts commit 23cb1f644019bac49d87b4dd7c1eac0569cc4f53.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
1 file changed