dt-bindings: serial: 8250_omap: Add wakeup pinctrl state

dt-bindings: serial: 8250_omap: Add wakeup pinctrl state

Pins associated with the 8250 omap unit can be the source of a wakeup in
deep sleep states. To be able to wakeup, these pins have to be
configured in a special way. To support this configuration add the
default and wakeup pinctrl states.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Signed-off-by: Kendall Willis <k-willis@ti.com>
Link: https://lore.kernel.org/r/20250910-uart-daisy-chain-8250-omap-v2-1-e90d44c1a9ac@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>