pinctrl: renesas: rzg2l: Rename rzg2l_gpio_configs[]

The rzg2l_gpio_configs array is really related to the RZ/G2L (R9A07G044)
Soc only.  Hence rename it to r9a07g044_gpio_configs[].

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/19958e63a2b793be5182640c4301ec5a77a507f6.1695369116.git.geert+renesas@glider.be