tests: arch: arm: move ZLI test to arm_irq_advanced_features suite

Move the zero-latency IRQ test into the new
arm_irq_advanced_features' test suite. Skip
running the test for non Mainline Cortex-M.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
7 files changed