[PATCH v4 4/9] nios2: fix building all dtbs

[Rob Herring]

nios2 has a 'dtbs' target, but nothing is added to 'dtb-*' targets and
no dtbs were getting built. This enables building all the dts files in
arch/nios2/boot/dts/ when COMPILE_TEST and OF_ALL_DTBS are enabled.

Cc: Ley Foon Tan <lftan@xxxxxxxxxx>
Cc: nios2-dev@xxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
---
 arch/nios2/boot/dts/Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/nios2/boot/dts/Makefile b/arch/nios2/boot/dts/Makefile
index f6358e395b25..a91a0b09be63 100644
--- a/arch/nios2/boot/dts/Makefile
+++ b/arch/nios2/boot/dts/Makefile
@@ -1,3 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 
 obj-y := $(patsubst "%.dts",%.dtb.o,$(CONFIG_NIOS2_DTB_SOURCE))
+
+dtstree		:= $(srctree)/$(src)
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
-- 
2.17.1