defconfig: sdm670: Enable request based  device mapper

Request based device mapper is required to support
HW encryption.

Change-Id: I8071f020fb2cd9ed3df971d174cc9d73ea7bbe15
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
diff --git a/arch/arm64/configs/sdm670_defconfig b/arch/arm64/configs/sdm670_defconfig
index a3ddc74..7be6df2 100644
--- a/arch/arm64/configs/sdm670_defconfig
+++ b/arch/arm64/configs/sdm670_defconfig
@@ -264,6 +264,7 @@
 CONFIG_MD=y
 CONFIG_BLK_DEV_DM=y
 CONFIG_DM_CRYPT=y
+CONFIG_DM_REQ_CRYPT=y
 CONFIG_DM_UEVENT=y
 CONFIG_DM_VERITY=y
 CONFIG_DM_VERITY_FEC=y