arm64: dts: ti: k3-am62-lp-sk: Set wakeup-source system-states

arm64: dts: ti: k3-am62-lp-sk: Set wakeup-source system-states

The CANUART pins of mcu_mcan0, mcu_mcan1, mcu_uart0 and wkup_uart0 are
powered during Partial-IO and I/O Only + DDR and are capable of waking
up the system in these states. Specify the states in which these units
can do a wakeup on this board.

Note that the UARTs are not capable of wakeup in Partial-IO because of
of a UART mux on the board not being powered during Partial-IO. As I/O
Only + DDR is not supported on AM62x, the UARTs are not added in this
patch.

Add pincontrol definitions for mcu_mcan0 and mcu_mcan1 for wakeup from
Partial-IO. Add these as wakeup pinctrl entries for both devices.

Signed-off-by: Markus Schneider-Pargmann (TI.com) <msp@baylibre.com>
Link: https://patch.msgid.link/20251103-topic-am62-dt-partialio-v6-15-v5-4-b8d9ff5f2742@baylibre.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>