Pixel Common: system_dlkm: avb hashtree footer

Add avb hashtree footer args for the system_dlkm
partition required for the T launch devices.

Bug: 222334390
Test: TH, manual build, Code testing gs101 & R6
Signed-off-by: Ramji Jiyani <ramjiyani@google.com>
Change-Id: I7a28ccfa2acad2e20c35a8a68edbffcca068678e
diff --git a/target/board/BoardConfigPixelCommon.mk b/target/board/BoardConfigPixelCommon.mk
index a970fec..22521b5 100644
--- a/target/board/BoardConfigPixelCommon.mk
+++ b/target/board/BoardConfigPixelCommon.mk
@@ -5,6 +5,7 @@
 # Using sha256 for dm-verity partitions. b/156162446
 # system, system_other, system_ext and product.
 BOARD_AVB_SYSTEM_ADD_HASHTREE_FOOTER_ARGS += --hash_algorithm sha256
+BOARD_AVB_SYSTEM_DLKM_ADD_HASHTREE_FOOTER_ARGS += --hash_algorithm sha256
 BOARD_AVB_SYSTEM_OTHER_ADD_HASHTREE_FOOTER_ARGS += --hash_algorithm sha256
 BOARD_AVB_SYSTEM_EXT_ADD_HASHTREE_FOOTER_ARGS += --hash_algorithm sha256
 BOARD_AVB_PRODUCT_ADD_HASHTREE_FOOTER_ARGS += --hash_algorithm sha256