ti: k3: common: Enable GICv3 support

Do proper initialization of GIC V3. This will allow CP15 access to GIC
from "normal world" (aka HLOS) via mrc/mcr calls.

K3 SoC family uses GICv3 compliant GIC500 without compatibility for
legacy GICv2.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Benjamin Fair <b-fair@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
diff --git a/plat/ti/k3/include/k3_gicv3.h b/plat/ti/k3/include/k3_gicv3.h
new file mode 100644
index 0000000..bbf5bf9
--- /dev/null
+++ b/plat/ti/k3/include/k3_gicv3.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __K3_GICV3_H__
+#define __K3_GICV3_H__
+
+void k3_gic_driver_init(uintptr_t gicd_base, uintptr_t gicr_base);
+void k3_gic_init(void);
+void k3_gic_cpuif_enable(void);
+void k3_gic_cpuif_disable(void);
+void k3_gic_pcpu_init(void);
+
+#endif /* __K3_GICV3_H__ */