pinctrl: sh-pfc: Tidy up Emma Mobile EV2

It is "Emma Mobile EV2" not "AV2".
This patch tidies it up.

Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87lfi4y4re.wl-kuninori.morimoto.gx@renesas.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>