defconfig: Enable compaction

Enabling compaction can reduce allocation failures due to memory
fragmentation. Less failures can potentially result in a performance
boost.

CRs-fixed: 500546
Change-Id: I155a0e2c385619f746b83a899f824213803f34e5
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
7 files changed