Merge 6.6-rc6 into tty-next

We need the tty/serial fixes in here as well for testing, and this
resolves merge conflicts in:
	drivers/tty/serial/serial_core.c
as reported in linux-next

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>