[U-Boot] [PATCH v2 9/9] x86: use generic dtb rule with CONFIG_DEFAULT_DEVICE_TREE

[Thomas Chou]

Use generic dtb rule with CONFIG_DEFAULT_DEVICE_TREE, so that
there is no need to list all the dtb for different targets/boards
in Makefile.

Support list of Device Tree in DEFAULT_DEVICE_TREE. Each DT in the
list will be compiled. The first will be used as default to ship.

Signed-off-by: Thomas Chou <thomas at wytron.com.tw>
Cc: Bin Meng <bmeng.cn at gmail.com>
---
v2
  add list support as Simon suggested.

 arch/x86/dts/Makefile | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/arch/x86/dts/Makefile b/arch/x86/dts/Makefile
index 64e5694..eaeb26f 100644
--- a/arch/x86/dts/Makefile
+++ b/arch/x86/dts/Makefile
@@ -2,16 +2,8 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-dtb-y += bayleybay.dtb \
-	chromebook_link.dtb \
-	chromebox_panther.dtb \
-	crownbay.dtb \
-	efi.dtb \
-	galileo.dtb \
-	minnowmax.dtb \
-	qemu-x86_i440fx.dtb \
-	qemu-x86_q35.dtb \
-	broadwell_som-6896.dtb
+DEVICE_TREE_LIST ?= $(subst $\",,$(CONFIG_DEFAULT_DEVICE_TREE))
+dtb-y += $(DEVICE_TREE_LIST:=.dtb)
 
 targets += $(dtb-y)
 
-- 
2.5.0