Add build and boot test config for Arm Ethos-N NPU SiP service

Configurations have been added to verify that the Arm Juno platform can
be built for AArch64 and boot up when the Arm Ethos-N NPU SiP service is
enabled.

Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>
Change-Id: Ibe55daaefeccfc8aa2351a4e52de9f28632896dc
3 files changed