ARM: zynq: drop legacy ps7_init.c/h support

We are about to change the location for ps7_init files, breaking the
current work-flows.  It is good time to drop the legacy ps7_init.c/h
support.

Going forward, please use ps7_init_gpl.c/h all the time.
If you are still using old Xilinx tools that are only able to
generate ps7_init.c/h, rename them into ps7_init_gpl.c/h.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Suggested-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/xilinx/zynq/Makefile b/board/xilinx/zynq/Makefile
index 3b1eb4f..054c3d8 100644
--- a/board/xilinx/zynq/Makefile
+++ b/board/xilinx/zynq/Makefile
@@ -9,9 +9,7 @@
 
 # Please copy ps7_init_gpl.c/h from hw project to this directory
 obj-$(CONFIG_SPL_BUILD) += \
-		$(if $(wildcard $(srctree)/$(src)/ps7_init_gpl.c), ps7_init_gpl.o, \
-			$(if $(wildcard $(srctree)/$(src)/ps7_init.c), ps7_init.o legacy.o))
+	$(if $(wildcard $(srctree)/$(src)/ps7_init_gpl.c), ps7_init_gpl.o)
 
 # Suppress "warning: function declaration isn't a prototype"
 CFLAGS_REMOVE_ps7_init_gpl.o := -Wstrict-prototypes
-CFLAGS_REMOVE_ps7_init.o := -Wstrict-prototypes