tests: app_dev: ram_context_for_isr: fix irq_num

This commit fixes build issue when multi level interrupts is enabled,
define TEST_IRQ_NUM as (CONFIG_2ND_LVL_ISR_TBL_OFFSET - 1)
  - CMSIS/Core/Include/core_cm33.h:2438:15: error: array subscript 24
    is above array bounds of volatile uint32_t[16]

Signed-off-by: Biwen Li <[email protected]>

Author: biwenli

tests/application_development/ram_context_for_isr/include/fake_driver.h

@@ -26,7 +26,12 @@ extern "C" {
 
 #else
 /* For all the other platforms, use the last available IRQ line for testing. */
+#ifdef CONFIG_MULTI_LEVEL_INTERRUPTS
+#define TEST_IRQ_NUM (CONFIG_2ND_LVL_ISR_TBL_OFFSET - 1)
+#else
 #define TEST_IRQ_NUM  (CONFIG_NUM_IRQS - 1)
+#endif
+
 #define TEST_IRQ_PRIO 1
 #endif