arm64: defconfig: Enable EDAC drivers

Enable CPU EDAC drivers for lahaina SoC. Cpu edac driver detects
and reports of single and double bit errors on cpu caches.

Change-Id: Ie968ca80aeb41bc14007a2b7b98fb7723a6ec6c0
Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>