db845c/BoardConfig.mk: set bootv3 as the default am: 63f8e16a54 am: 02fe7e8a56

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/1652236

Change-Id: I3e9a048a413994a89a8d841ee7366297f0ff6214
diff --git a/db845c/BoardConfig.mk b/db845c/BoardConfig.mk
index d668719..5f4d343 100644
--- a/db845c/BoardConfig.mk
+++ b/db845c/BoardConfig.mk
@@ -6,6 +6,7 @@
 
 TARGET_NO_KERNEL := false
 BOARD_INCLUDE_DTB_IN_BOOTIMG := true
+TARGET_USES_BOOT_HDR_V3 ?= true
 ifeq ($(TARGET_USES_BOOT_HDR_V3), true)
  BOARD_BOOT_HEADER_VERSION := 3
  BOARD_KERNEL_PAGESIZE := 4096