xilinx: versal: Add PSCI APIs for suspend/resume

Add following APIs in plat_psci to support suspend resume:
- versal_pwr_domain_off
- versal_pwr_domain_suspend
- versal_pwr_domain_suspend_finish
- versal_validate_power_state
- versal_get_sys_suspend_power_state

Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: Ife908a45f32e2037c9c19e13211a8e4b373b8342
diff --git a/plat/xilinx/versal/platform.mk b/plat/xilinx/versal/platform.mk
index 638f4fb..52d2c97 100644
--- a/plat/xilinx/versal/platform.mk
+++ b/plat/xilinx/versal/platform.mk
@@ -37,7 +37,8 @@
 VERSAL_CONSOLE	?=	pl011
 $(eval $(call add_define_val,VERSAL_CONSOLE,VERSAL_CONSOLE_ID_${VERSAL_CONSOLE}))
 
-PLAT_INCLUDES		:=	-Iplat/xilinx/common/include/			\
+PLAT_INCLUDES		:=	-Iinclude/plat/arm/common/			\
+				-Iplat/xilinx/common/include/			\
 				-Iplat/xilinx/common/ipi_mailbox_service/	\
 				-Iplat/xilinx/versal/include/			\
 				-Iplat/xilinx/versal/pm_service/
@@ -47,15 +48,19 @@
 				drivers/delay_timer/delay_timer.c		\
 				drivers/delay_timer/generic_delay_timer.c	\
 				drivers/arm/gic/common/gic_common.c		\
+				drivers/arm/gic/v3/arm_gicv3_common.c		\
+				drivers/arm/gic/v3/gic500.c			\
 				drivers/arm/gic/v3/gicv3_main.c			\
 				drivers/arm/gic/v3/gicv3_helpers.c		\
 				drivers/arm/pl011/aarch64/pl011_console.S	\
 				plat/common/aarch64/crash_console_helpers.S	\
+				plat/arm/common/arm_cci.c			\
 				plat/common/plat_gicv3.c			\
 				plat/xilinx/versal/aarch64/versal_helpers.S	\
 				plat/xilinx/versal/aarch64/versal_common.c
 
-BL31_SOURCES		+=	lib/cpus/aarch64/cortex_a53.S			\
+BL31_SOURCES		+=	drivers/arm/cci/cci.c				\
+				lib/cpus/aarch64/cortex_a53.S			\
 				lib/cpus/aarch64/cortex_a72.S			\
 				plat/common/plat_psci_common.c			\
 				plat/xilinx/common/ipi.c			\