Staging: fsl-dpaa2: ethernet: dpaa2-eth.c: Fixed a style issue

Fixed the checkpatch warning "Please don't use multiple blank lines"

Signed-off-by: Santha Meena Ramamoorthy <santhameena13@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>