[][MT7986][Add DM_CRYPT, CRYPTO_XTS in config-5.4]

[Description]
Add DM_CRYPT, CRYPTO_XTS in config-5.4, these options are for
mounting encrypted rootfs using dm-crypt with AES-XTS mode

[Release-log]
N/A

Change-Id: Iebcbb1f58e3b87c1d5f1632f5bf8ad48109028be
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7063963
1 file changed