meta-google: set uboot env override for flash-65536

Change-Id: Ifd374c6fdc187595b2018d7a26c8cba6134c917e
Signed-off-by: Anthony <anthonyhkf@google.com>
diff --git a/meta-google/classes/image_types_hoth.bbclass b/meta-google/classes/image_types_hoth.bbclass
index 78df090..c2c6f73 100644
--- a/meta-google/classes/image_types_hoth.bbclass
+++ b/meta-google/classes/image_types_hoth.bbclass
@@ -11,6 +11,7 @@
 
 # Leave a zero-size u-boot env partition.
 FLASH_UBOOT_ENV_OFFSET = "${FLASH_KERNEL_OFFSET}"
+FLASH_UBOOT_ENV_OFFSET:flash-65536 = "${FLASH_KERNEL_OFFSET:flash-65536}"
 
 # Support BMC image to have secondary hoth firmware
 ENABLE_HOTH_SECONDARY ?= "no"