refactor(el3-runtime): plat_ic_has_interrupt_type returns bool

Rather than returning 0 or 1, the above function returns bool false
or true. No functional change.

Change-Id: Iea904ffc368568208fa8203e0d2e0cdaa500b1e0
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
diff --git a/plat/common/plat_gicv3.c b/plat/common/plat_gicv3.c
index 29c85f4..baa70e0 100644
--- a/plat/common/plat_gicv3.c
+++ b/plat/common/plat_gicv3.c
@@ -235,14 +235,14 @@
 	gicv3_set_interrupt_priority(id, plat_my_core_pos(), priority);
 }
 
-int plat_ic_has_interrupt_type(unsigned int type)
+bool plat_ic_has_interrupt_type(unsigned int type)
 {
 	if ((type == INTR_TYPE_EL3) || (type == INTR_TYPE_S_EL1) ||
 			(type == INTR_TYPE_NS)) {
-		return 1;
+		return true;
 	}
 
-	return 0;
+	return false;
 }
 
 void plat_ic_set_interrupt_type(unsigned int id, unsigned int type)