rcar_gen3: drivers: pfc: M3N: Drop forward declarations

There's no point in having forward declaration just before the function
itself, drop it. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I374c4e90729cd13aa4c5878bb3d0917071fa19f1
1 file changed