zynqmp: FSBL->ATF handover

Parse the parameter structure the FSBL populates, to populate the bl32
and bl33 image structures.

Cc: Sarat Chand Savitala <saratcha@xilinx.com>
Cc: petalinux-dev@xilinx.com
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
[ SB
 - pass pointers to structs instead of structs
 - handle execution state parameter
 - populate bl32 SPSR
 - add documentation
 - query bootmode and consider missing handoff parameters an error when
   not in JTAG boot mode
]
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
diff --git a/plat/xilinx/zynqmp/platform.mk b/plat/xilinx/zynqmp/platform.mk
index e0a325d..abbb15a 100644
--- a/plat/xilinx/zynqmp/platform.mk
+++ b/plat/xilinx/zynqmp/platform.mk
@@ -82,6 +82,7 @@
 				plat/xilinx/zynqmp/bl31_zynqmp_setup.c		\
 				plat/xilinx/zynqmp/plat_psci.c			\
 				plat/xilinx/zynqmp/plat_zynqmp.c		\
+				plat/xilinx/zynqmp/plat_startup.c		\
 				plat/xilinx/zynqmp/plat_topology.c		\
 				plat/xilinx/zynqmp/sip_svc_setup.c		\
 				plat/xilinx/zynqmp/pm_service/pm_svc_main.c	\