zynqmp: Migrate to new interfaces

- Remove references to removed build options.
- Migrate to bl31_early_platform_setup2().

Change-Id: Ibeb8982a0a841f55ce778c4f09f06b72b47b21d8
Tested-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/docs/plat/xilinx-zynqmp.rst b/docs/plat/xilinx-zynqmp.rst
index 4280241..2b48ba9 100644
--- a/docs/plat/xilinx-zynqmp.rst
+++ b/docs/plat/xilinx-zynqmp.rst
@@ -14,13 +14,13 @@
 
 .. code:: bash
 
-    make ERROR_DEPRECATED=1 CROSS_COMPILE=aarch64-none-elf- PLAT=zynqmp bl31
+    make CROSS_COMPILE=aarch64-none-elf- PLAT=zynqmp bl31
 
 To build bl32 TSP you have to rebuild bl31 too:
 
 .. code:: bash
 
-    make ERROR_DEPRECATED=1 CROSS_COMPILE=aarch64-none-elf- PLAT=zynqmp SPD=tspd bl31 bl32
+    make CROSS_COMPILE=aarch64-none-elf- PLAT=zynqmp SPD=tspd bl31 bl32
 
 ZynqMP platform specific build options
 ======================================