Support TF-M BL1 on nrf53

[Nano-HK]

Hi,

I have recently seen that TF-M have added BL1 bootloader, is there any roadmap on whether Zephyr will have support for TF-M BL1 bootloader?

Is there possibility to create first stage bootloader with the current Zephyr version on nRF53?

Regards,
Hamza

[Nano-HK]

@zephyrbot