docs: media: rc: use TOC instead of file contents for LIRC header

docs: media: rc: use TOC instead of file contents for LIRC header

All we wanted were to have a way to link the comprehensive
documentation with the actual symbols parsed from the header
file, as this helps to identify any broken references.

Use the new :toc: flag for LIRC and enable warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <94dc601b4777ca544489ffc6cef9a2da5fe28e0e.1759329363.git.mchehab+huawei@kernel.org>