Documentation: Add default kmemleak off case in kernel-parameters.txt

Add missing explanation about CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF=y case.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
1 file changed