kernel: Document TARGET_KERNEL_RECOVERY_CONFIG usage
Change-Id: Idefd38dae5e8beac7d7de797f3f792fea25dacef
diff --git a/build/tasks/kernel.mk b/build/tasks/kernel.mk
index ef6ae8f..9b8c873 100644
--- a/build/tasks/kernel.mk
+++ b/build/tasks/kernel.mk
@@ -22,8 +22,9 @@
# These config vars are usually set in BoardConfig.mk:
#
# TARGET_KERNEL_CONFIG = List of kernel defconfigs, first one being the base one,
-# while all the others are fragments that will be merged.
+# while all the others are fragments that will be merged
# to main one in .config.
+# TARGET_KERNEL_RECOVERY_CONFIG = Same as above, but applicable to recovery kernel instead.
# TARGET_KERNEL_VARIANT_CONFIG = Variant defconfig, optional
# TARGET_KERNEL_SELINUX_CONFIG = SELinux defconfig, optional
#