pinctrl: amd: Fix newline declaration in debugfs output

Currently the debugfs output for pinctrl-amd puts the first line
combined with "GPIO bank".  This makes it a little harder to process
as the file needs to be manually corrected for the mistake.

Change this to be a new line character instead.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220722220810.28894-1-mario.limonciello@amd.com


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