ARM: dts: bcm2711-rpi-400: Fix GPIO line names

ARM: dts: bcm2711-rpi-400: Fix GPIO line names

BugLink: https://bugs.launchpad.net/bugs/1986718
commit b9b6d4c925604b70d007feb4c77b8cc4c038d2da upstream.

The GPIO expander line names has been fixed in the vendor tree last year,
so upstream these changes.

Fixes: 1c701accecf2 ("ARM: dts: Add Raspberry Pi 400 support")
Reported-by: Ivan T. Ivanov <iivanov@suse.de>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>