nordic_nrf: Set FLIH IRQ tests as default

Disabling Second-level Interrupt handling tests to run the first-level
tests as default on nordic platforms.

Change-Id: I6547d942e892f78dfa954f4aed2398807eafa1df
Signed-off-by: Markus Swarowsky <markus.swarowsky@nordicsemi.no>
1 file changed