ARM64: zynq: Fix boot.bin generation for Zynq and ZynqMP

Fix boot.bin generation for Zynq and ZynqMP.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Marek Vasut <marex@denx.de>
diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl
index 6d2017d..0997fd9 100644
--- a/scripts/Makefile.spl
+++ b/scripts/Makefile.spl
@@ -158,11 +158,8 @@
 ALL-y	+= boot.bin
 endif
 
-ifdef CONFIG_ARCH_ZYNQ
-ALL-y	+= $(obj)/boot.bin
-endif
-
-ALL-(CONFIG_ARCH_ZYNQMP)	+= $(obj)/boot.bin
+ALL-$(CONFIG_ARCH_ZYNQ)		+= $(obj)/boot.bin
+ALL-$(CONFIG_ARCH_ZYNQMP)	+= $(obj)/boot.bin
 
 all:	$(ALL-y)