xilinx: common: Move ATF handover to common file

ATF handover can be used by Xilinx platforms, so move it to common
file from platform specific files.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@xilinx.com>
Change-Id: I5f0839351f534619de581d1953c8427a079487e0
diff --git a/plat/xilinx/zynqmp/include/plat_private.h b/plat/xilinx/zynqmp/include/plat_private.h
index 8bdf429..288cc53 100644
--- a/plat/xilinx/zynqmp/include/plat_private.h
+++ b/plat/xilinx/zynqmp/include/plat_private.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -21,13 +21,6 @@
 unsigned int zynqmp_get_uart_clk(void);
 unsigned int zynqmp_get_bootmode(void);
 
-/* For FSBL handover */
-enum fsbl_handoff {
-	FSBL_HANDOFF_SUCCESS = 0,
-	FSBL_HANDOFF_NO_STRUCT,
-	FSBL_HANDOFF_INVAL_STRUCT,
-	FSBL_HANDOFF_TOO_MANY_PARTS,
-};
 
 #if ZYNQMP_WDT_RESTART
 /*
@@ -37,7 +30,4 @@
 int request_intr_type_el3(uint32_t, interrupt_type_handler_t);
 #endif
 
-enum fsbl_handoff fsbl_atf_handover(entry_point_info_t *bl32_image_ep_info,
-		       entry_point_info_t *bl33_image_ep_info);
-
 #endif /* PLAT_PRIVATE_H */