include bootloader in mako OTA

Bug: 6977989
Change-Id: Ie8b3ba1ad7abdf62891a2f186c98f92e9a498555
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 0dec0d0..28a95bc 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -86,4 +86,6 @@
 BOARD_VENDOR_QCOM_GPS_LOC_API_HARDWARE := $(TARGET_BOARD_PLATFORM)
 TARGET_NO_RPC := true
 
+TARGET_RELEASETOOLS_EXTENSIONS := device/lge/mako
+
 -include vendor/lge/mako/BoardConfigVendor.mk