[nrf fromlist] tests: kernel: interrupt: Add ISR offset definitions for nrf9280

- Correct test by adding ISR offset definitions for nrf9280 ppr.

Upstream PR #: 90756
Signed-off-by: Aymen LAOUINI <[email protected]>

Author: ayla-nordicsemi

tests/kernel/interrupt/src/nested_irq.c

@@ -66,6 +66,13 @@
 #define IRQ0_LINE	14
 #define IRQ1_LINE	15
 
+#define IRQ0_PRIO	1
+#define IRQ1_PRIO	2
+
+#elif defined(CONFIG_SOC_NRF9280_CPUPPR)
+#define IRQ0_LINE	14
+#define IRQ1_LINE	15
+
 #define IRQ0_PRIO	1
 #define IRQ1_PRIO	2
 #else