defconfig: arm64: Enable CNE feature configs for sdm855

Enable the related configs below for VPN, DPM, CTS, Quota, and
Tethering features.
VPN related:
1.	CONFIG_PPPOL2TP.
2.	CONFIG_PPPOLAC.
3.	CONFIG_PPPOPNS.
4.	CONFIG_PPP_FILTER.
5.	CONFIG_PPP_MULTILINK.
6.	CONFIG_PPPOE.
7.	CONFIG_PPP_ASYNC.
8.	CONFIG_PPP_SYNC_TTY.
CTS related:
1.	CONFIG_INET_DIAG_DESTROY
Quota related:
1.       CONFIG_NETFILTER_XT_MATCH_QUOTA2.
Tethering related:
1.	CONFIG_IP_NF_MATCH_RPFILTER.
2.	CONFIG_IP6_NF_MATCH_RPFILTER.

Change-Id: Ia7912b0ab0d91be3aa35e3ce6b51569c91c050f1
Signed-off-by: Tyler Wear <twear@codeaurora.org>