csky: Remove unused $(dtb-y) from boot/Makefile

arch/csky/boot/Makefile does not build DTB,
arch/csky/boot/dts/Makefile does.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Guo Ren <guoren@kernel.org>

diff --git a/arch/csky/boot/Makefile b/arch/csky/boot/Makefile
index dbc9b1bd72f0b7d3c986194e9581ab9948810b7b..c3cfde28f8e603d38a9c7e1a84c0aafd39202967 100644 (file)
--- a/arch/csky/boot/Makefile
+++ b/arch/csky/boot/Makefile
@@ -1,6 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 targets := Image zImage uImage
-targets += $(dtb-y)
 
 $(obj)/Image: vmlinux FORCE
        $(call if_changed,objcopy)