defconfig : enable quota feature for sdm670

The recent Android upgrade mandates disk quota feature to be enabled by
default on /data. Hence, enable the required kernel config options to
support the same.

Change-Id: I36542f5fb3d5311a7e2af861da76cca85f9a5f96
Signed-off-by: Ankit Jain <jankit@codeaurora.org>