dpif-netdev: Fix a couple of coding style issues.

dpif-netdev: Fix a couple of coding style issues.

A couple of trivial fixes for a ternery operator placement
and pointer declaration.

Fixes: 655856ef39b9 ("dpif-netdev: Change rxq_scheduling to use rxq processing cycles.")
Fixes: a2ac666d5265 ("dpif-netdev: Change definitions of 'idle' & 'processing' cycles")
Cc: ciara.loftus@intel.com
Reported-by: Ilya Maximets <i.maximets@samsung.com>
Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
Acked-by: Ciara Loftus <ciara.loftus@intel.com>
Signed-off-by: Darrell Ball <dlu998@gmail.com>