Add UART pinctrl group for using only pins 80 and 81 for uart1.
This is needed on the BPi-R4 as RTS/CTS signals are used for other
on-board functions.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
With Linux 6.1 many of our downstream patches and out-of-tree files
can be removed or at least replaced by backported upstream commits.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
[fix CMDLINE_OVERRIDE for arm64]
Signed-off-by: Bjørn Mork <bjorn@mork.no>
