jf-common: dex-opt to cache

cache partition is 2gb, seriously, this is fine for us

Change-Id: I82be27c0bc5ea0f93b2ebd9b59f3e7dc0bd62006
jf-common: Change rtc0 to 660

Like just about every other device I looked at

Change-Id: Iae7f9b5054a435c39b4be09527aaa92682d806cc