pinctrl: amd: change dev_warn to dev_dbg for additional feature support

Use dev_dbg instead of dev_warn for additional support of pinmux
feature.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Link: https://lore.kernel.org/r/20220830110525.1933198-1-Basavaraj.Natikar@amd.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>