test: arm: irq: Add overlays files for Infineon boards

Changed interrupt priority for GPIO, default 6 is not suitable for
for the ZERO_LATENCY_IRQS function used in this test.
used in this test.

Fixes for problem with arm_irq_zero_latency_levels
refer to pull/81377

Signed-off-by: Nazar Palamar <nazar.palamar@infineon.com>
(cherry picked from commit 61720927)