staging: most: cdev: rename variable cdev_aim

This patch renames the variable cdev_aim to cdev_comp. It is needed to
complete the process of changing the module designator from AIM to
Component.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>