GIC: Add APIs to enable and disable interrupt

API documentation updated.

Change-Id: Ice7511f8df5356851001d2f7dc2a46cfe318f9ba
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 ec272ea..6e6a47b 100644
--- a/include/drivers/arm/gicv3.h
+++ b/include/drivers/arm/gicv3.h
@@ -351,6 +351,8 @@
 
 unsigned int gicv3_get_running_priority(void);
 unsigned int gicv3_get_interrupt_active(unsigned int id, unsigned int proc_num);
+void gicv3_enable_interrupt(unsigned int id, unsigned int proc_num);
+void gicv3_disable_interrupt(unsigned int id, unsigned int proc_num);
 
 #endif /* __ASSEMBLY__ */
 #endif /* __GICV3_H__ */