[nrf fromtree] tests: kernel: gen_isr_table: Add ISR offset definitions for nrf9280

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

Signed-off-by: Aymen LAOUINI <[email protected]>
(cherry picked from commit 07d9f15)

Author: ayla-nordicsemi

tests/kernel/gen_isr_table/src/main.c

@@ -31,6 +31,11 @@ extern uintptr_t _irq_vector_table[];
 #define ISR3_OFFSET	15
 #define ISR5_OFFSET	16
 #define TRIG_CHECK_SIZE	17
+#elif defined(CONFIG_SOC_NRF9280_CPUPPR)
+#define ISR1_OFFSET	14
+#define ISR3_OFFSET	15
+#define ISR5_OFFSET	16
+#define TRIG_CHECK_SIZE	17
 #else
 #error "Target not supported"
 #endif