Staging: bcm: Qos.c: fix checkpatch errors: comments

This patch improves coding style in Qos.c
Comments according to the coding guideline
Signed-off-by: Martin Gumbrecht <martin.gumbrecht@googlemail.com>
Signed-off-by: Christian Bay <christian.bay@studium.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>