[][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
diff --git a/target/linux/mediatek/mt7986/config-5.4 b/target/linux/mediatek/mt7986/config-5.4
index a6439c2..7e8a783 100644
--- a/target/linux/mediatek/mt7986/config-5.4
+++ b/target/linux/mediatek/mt7986/config-5.4
@@ -179,6 +179,7 @@
 CONFIG_CRYPTO_SHA256=y
 CONFIG_CRYPTO_SHA512=y
 CONFIG_CRYPTO_TEST=m
+CONFIG_CRYPTO_XTS=y
 CONFIG_DCACHE_WORD_ACCESS=y
 CONFIG_DEBUG_MISC=y
 CONFIG_DEVTMPFS=y
@@ -192,7 +193,7 @@
 CONFIG_DMA_REMAP=y
 CONFIG_DMA_VIRTUAL_CHANNELS=y
 CONFIG_DM_BUFIO=y
-# CONFIG_DM_CRYPT is not set
+CONFIG_DM_CRYPT=y
 # CONFIG_DM_DEBUG_BLOCK_MANAGER_LOCKING is not set
 CONFIG_DM_INIT=y
 # CONFIG_DM_MIRROR is not set