drivers/component: kerneldoc polish

Polish the kerneldoc a bit with suggestions from Randy.

v2: Randy found another typo: s/compent/component/

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ramalingam C <ramalingam.c@intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>