GIC: Add API to get interrupt active status

API documentation updated.

Change-Id: I6d61785af0d5330930c709de971a904dc7c3516c
Co-authored-by: Yousuf A <yousuf.sait@arm.com>
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/include/drivers/arm/gicv3.h b/include/drivers/arm/gicv3.h
index 4548a87..ec272ea 100644
--- a/include/drivers/arm/gicv3.h
+++ b/include/drivers/arm/gicv3.h
@@ -350,6 +350,7 @@
 void gicv3_its_restore(uintptr_t gits_base, const gicv3_its_ctx_t * const its_ctx);
 
 unsigned int gicv3_get_running_priority(void);
+unsigned int gicv3_get_interrupt_active(unsigned int id, unsigned int proc_num);
 
 #endif /* __ASSEMBLY__ */
 #endif /* __GICV3_H__ */