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.

Signed-off-by: Nazar Palamar <nazar.palamar@infineon.com>
(cherry picked from commit 6172092730a88f93696f48983e65a18a9cabff00)
6 files changed