Merge patch series "can: tcan4x5x/m_can: use standby mode when down and in suspend"

Sean Nyekjaer <sean@geanix.com> says:

When downing the tcan4x5x there is no reason to keep the tcan4x5x in
"normal" mode and waste power. So set standby mode when the interface
is down and normal mode when interface is up.

Also when going into suspend, set the tcan4x5x into standby mode. The
tcan4x5x can still be used as a wake-source when in standby as low
power RX is enabled.

Link: https://patch.msgid.link/20241122-tcan-standby-v3-0-90bafaf5eccd@geanix.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>