boards: fvp_base_revc_2xaemv8a: permit running Zephyr at EL1NS

It may be needed to run Zephyr at EL1NS level with `CONFIG_ARMV8_A_NS`
In order to run at EL1NS, you'll need a proper Firmware loaded in the
FVP model to run Zephyr at non-secure EL3.

The ARM TF-A for FVP can used to run Zephyr as preloaded BL33.

This adds the necessary cmake scripts to load the TF-A binaries and
load Zephyr as preloaded BL33 payload.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2 files changed