pinctrl: renesas: emev2: Share SDI pin group data

Pin groups sdi0_data[14] are subsets of sdi0_data8.
Pin groups sdi[12]_data1 are subsets of sdi[12]_data4.

This reduces kernel size by 56 bytes.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/0f35f01666748217b93c2debc0098f9442061a1a.1640269757.git.geert+renesas@glider.be