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/zynqmp_private.h b/plat/xilinx/zynqmp/zynqmp_private.h
index 228d8dc..ddef37b 100644
--- a/plat/xilinx/zynqmp/zynqmp_private.h
+++ b/plat/xilinx/zynqmp/zynqmp_private.h
@@ -40,4 +40,8 @@
 int zynqmp_is_pmu_up(void);
 unsigned int zynqmp_get_bootmode(void);
 
+/* For FSBL handover */
+void fsbl_atf_handover(entry_point_info_t *bl32_image_ep_info,
+		       entry_point_info_t *bl33_image_ep_info);
+
 #endif /* __ZYNQMP_PRIVATE_H__ */