Makefile: enable dochelp run from main make level

Change to enable dochelp run from main make level to make it easier to
use it.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Shuah Khan 2017-10-02 17:44:19 -06:00 • committed by Jonathan Corbet
commit 8d73c512e6