printk: htmldocs: add missing description

Variable and return descriptions were missing from the SRCU read
lock functions. Add them.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/87zgcjpdvo.fsf@jogness.linutronix.de
This commit is contained in:
John Ogness 2022-11-22 10:01:23 +01:06 • committed by Petr Mladek
commit 5074ffbec6