doc: reorg arch interface documentation

Reorganize functions in header file for better fit.

Signed-off-by: Anas Nashif <[email protected]>

include/zephyr/sys/arch_interface.h

@@ -309,6 +309,16 @@ void arch_irq_enable(unsigned int irq);
  */
 int arch_irq_is_enabled(unsigned int irq);
 
+/**
+ * Set IRQ number priority
+ *
+ * @param irq IRQ line number
+ * @param prio Interrupt priority
+ * @param flags Arch-specific IRQ configuration flag
+ *
+ */
+void arch_irq_priority_set(unsigned int irq, unsigned int prio, uint32_t flags);
+
 /**
  * Arch-specific hook to install a dynamic interrupt.
  *
@@ -342,17 +352,6 @@ int arch_irq_disconnect_dynamic(unsigned int irq, unsigned int priority,
 				void (*routine)(const void *parameter),
 				const void *parameter, uint32_t flags);
 
-
-/**
- * Set IRQ number priority
- *
- * @param irq IRQ line number
- * @param prio Interrupt priority
- * @param flags Arch-specific IRQ configuration flag
- *
- */
-void arch_irq_priority_set(unsigned int irq, unsigned int prio, uint32_t flags);
-
 /**
  * @def ARCH_IRQ_CONNECT(irq, pri, isr, arg, flags)
  *