This commit contributes the Kconfig and DTS files for the
nrf9160_pca10090 board definition. The nrf9160_pca10090 board
shall be used to build Zephyr applications, running in Secure
mode, on nRF9160_PCA10090 Dev Kit.
Additionally, the commit introduces a default Secure and
Non-Secure flash partition configuration for the
nRF9160_PCA10090 board, allowing to use Zephyr for building
both the Secure and Non-Secure firmware images.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
Ioannis Glaropoulos