boards: riscv: tlsr9518adk80d: add new flash partition to the board dts
boards: riscv: tlsr9518adk80d: add new flash partition to the board dts

- Remove flash_mspi node that contains old one flash partition
- Add new partition in flash node
- Add the partition into choosen
- Add led2, led3 into aliases

Signed-off-by: Alex Kolosov <3df35dfd68fc9f2abbb1f031317540db1d95af60@gmail.com>

zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr