Increase LinearAlloc limit

When run on framework.jar, dexopt needs about 4MB of LinearAlloc
space.  We were capped at 5MB.  Bump up the limit to 8MB to give
us some additional head room.

Bug 3362346

Change-Id: I61e06e4cd7d24d45e426026a5adddd7badc3b839
1 file changed