pinctrl: renesas: r8a779g0: Add missing HSCIF3_A

This patch adds missing HSCIF3_A.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87y1xdsjar.wl-kuninori.morimoto.gx@renesas.com


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