[source] apm821xx: add DEVICE_DTS_DIR variable, remove redundant DEVICE_VARS entry

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/?p=source.git;a=commitdiff;h=38866446325ede46ec34b2dea54db5cd4ca6312e

commit 38866446325ede46ec34b2dea54db5cd4ca6312e
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Fri Jul 22 11:12:34 2016 +0200

    apm821xx: add DEVICE_DTS_DIR variable, remove redundant DEVICE_VARS entry
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 target/linux/apm821xx/image/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/target/linux/apm821xx/image/Makefile b/target/linux/apm821xx/image/Makefile
index 649c501..94fcd58 100644
--- a/target/linux/apm821xx/image/Makefile
+++ b/target/linux/apm821xx/image/Makefile
@@ -6,7 +6,7 @@ include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 include $(INCLUDE_DIR)/host.mk
 
-DEVICE_VARS += DEVICE_DTS DEVICE_PROFILE IMAGE_SIZE DTB_SIZE
+DEVICE_VARS += DEVICE_PROFILE IMAGE_SIZE DTB_SIZE
 
 define Device/Default
   PROFILES := Default
@@ -15,6 +15,7 @@ define Device/Default
   DEVICE_DTS :=
   KERNEL_ENTRY := 0x00000000
   KERNEL_LOADADDR := 0x00000000
+  DEVICE_DTS_DIR := ../dts
 endef
 
 define Build/dtb