Add new facility to have multiple active codenames.

Use this to have both L and KKWT.

Change-Id: I78cd5ed2dcffab9e93030184ba6f9eb9a6a3cba5
diff --git a/core/Makefile b/core/Makefile
index 5966a3a..9739730 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -203,6 +203,7 @@
 			PLATFORM_VERSION="$(PLATFORM_VERSION)" \
 			PLATFORM_SDK_VERSION="$(PLATFORM_SDK_VERSION)" \
 			PLATFORM_VERSION_CODENAME="$(PLATFORM_VERSION_CODENAME)" \
+			PLATFORM_VERSION_ALL_CODENAMES="$(PLATFORM_VERSION_ALL_CODENAMES)" \
 			BUILD_VERSION_TAGS="$(BUILD_VERSION_TAGS)" \
 			TARGET_BOOTLOADER_BOARD_NAME="$(TARGET_BOOTLOADER_BOARD_NAME)" \
 			BUILD_FINGERPRINT="$(BUILD_FINGERPRINT)" \