(calyx) avb: add calyx public key

Change-Id: I8549c8f42e7f58b0cc29de63a922de323c776e14
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>
diff --git a/AndroidBoot.mk b/AndroidBoot.mk
index 7bf0170..475244f 100644
--- a/AndroidBoot.mk
+++ b/AndroidBoot.mk
@@ -84,6 +84,7 @@
 else
 	BOARD_BOOTLOADER_VERSION := unknown
 endif
+BOARD_BOOTLOADER_VERSION := $(BOARD_BOOTLOADER_VERSION)-calyx
 
 ifneq ($(TARGET_BOARD_TYPE),auto)
 	TARGET_BOARD_TYPE_AUTO := TARGET_BOARD_TYPE_AUTO=0