arm64: defconfig: Enable CONFIG_BALANCE_ANON_FILE_RECLAIM on Lahaina

Enable CONFIG_BALANCE_ANON_FILE_RECLAIM on Lahaina so that
anonymous pages and file backed pages are treated the same
during memory reclaim.

Change-Id: Id0b1657391ea610ea675cb8f8c15e14efa357875
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>