rcar_gen3: drivers: ddr_b: Further checkpatch cleanups

Address more checkpatch CHECKs and ERRORs, no functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: Ife682288cef3afa860571b2aca647c9ffe936125
2 files changed