Makefile: Add missing OF_UPSTREAM Makefile for 32bit ARM

Copy dts/upstream/src/arm64/Makefile into dts/upstream/src/arm/Makefile
and create a commit. This makes 32bit ARM buildable with OF_UPSTREAM .

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Tested-by: Adam Ford <aford173@gmail.com> #am3517-evm
Tested-by: Tony Dinh <mibodhi@gmail.com>

diff --git a/dts/upstream/src/arm/Makefile b/dts/upstream/src/arm/Makefile
new file mode 100644 (file)
index 0000000..9a8f6aa
--- /dev/null
+++ b/dts/upstream/src/arm/Makefile
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+include $(srctree)/scripts/Makefile.dts
+
+targets += $(dtb-y)
+
+# Add any required device tree compiler flags here
+DTC_FLAGS += -a 0x8
+
+PHONY += dtbs
+dtbs: $(addprefix $(obj)/, $(dtb-y))
+       @:
+
+clean-files := */*.dtb */*.dtbo