FROMGIT: driver core: Remove unnecessary is_fwnode_dev variable in device_add()

That variable is no longer necessary. Remove it and also fix a minor
typo in comments.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200520034824.79049-2-saravanak@google.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 2cd38fd15e4ebcfe917a443734820269f8b5ba2b
 https: //git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-next)
Bug: 157691602
Signed-off-by: Saravana Kannan <saravanak@google.com>
Change-Id: Ia7a0122d606211edc404a2733d35182a750daa92