telephony: do only run setCellInfoListRate for RIL version >= 8
old libraries like those from MR0 don't support this and sending this command causes endless wakelocks

Change-Id: Ia47d366f70841eb9910079e105add407f58e7555
Fix typo

Change-Id: Ia12ca4bd98c8f18a34af95b642e74196ea81fa19
Signed-off-by: Kevin Liu <airk908@gmail.com>