ARMv8: Setup PSCI memory and device tree

Newly add ARMv8 PSCI needs to be initialized, be copied or reserved in right
place, this patch does all the setup steps.

Signed-off-by: Hongbo Zhang <hongbo.zhang@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 4eee13a..43cc83e 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -316,6 +316,9 @@
 	announce_and_cleanup(fake);
 
 	if (!fake) {
+#ifdef CONFIG_ARMV8_PSCI
+		armv8_setup_psci();
+#endif
 		do_nonsec_virt_switch();
 
 		update_os_arch_secondary_cores(images->os.arch);