[U-Boot] [PATCH] [build] Automatically build the device tree if DEV_TREE_SEPARATE is set

[Gabe Black]

This change makes the u-boot "all" target build the separate device tree if
DEV_TREE_SEPARATE is set. This use of DEV_TREE_SEPARATE is consistent with the
one other use in the u-boot build system. It's at least expedient and perhaps
necessary to build the device tree this way since it's difficult to know the
value of $(obj) when invoking make.

Signed-off-by: Gabe Black <gabeblack at chromium.org>
---
 Makefile |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/Makefile b/Makefile
index 294c762..654e07e 100644
--- a/Makefile
+++ b/Makefile
@@ -371,6 +371,10 @@ $(obj)u-boot.dtb:	$(obj)u-boot
 		$(MAKE) -C dts binary
 		mv $(obj)dts/dt.dtb $@
 
+ifdef DEV_TREE_SEPARATE
+all:		$(obj)u-boot.dtb
+endif
+
 $(obj)u-boot-dtb.bin:	$(obj)u-boot.bin $(obj)u-boot.dtb
 		cat $^ >$@
 
-- 
1.7.3.1