staging: fsl-dpaa2: ethsw: ethsw.c: Fix line over 80 characters

Issue found by checkpatch.

Signed-off-by: Sandesh Kenjana Ashok <sandeshkenjanaashok@gmail.com>
Link: https://lore.kernel.org/r/20200214232143.GA20675@SandeshPC


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>