[source] brcm2708: fix image generation with imagebuilder

[LEDE Commits]

noltari pushed a commit to source.git, branch master:
https://git.lede-project.org/611399f1f8601835ca2118a548d58f556cf4b0df

commit 611399f1f8601835ca2118a548d58f556cf4b0df
Author: Álvaro Fernández Rojas <noltari at gmail.com>
AuthorDate: Thu Oct 13 19:01:41 2016 +0200

    brcm2708: fix image generation with imagebuilder
    
    COPYING is not present in $(LINUX_DIR) on imagebuilder and prevents a
    successful image creation.
    
    Signed-off-by: Álvaro Fernández Rojas <noltari at gmail.com>
---
 target/linux/brcm2708/image/Makefile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/target/linux/brcm2708/image/Makefile b/target/linux/brcm2708/image/Makefile
index f19f57c..d0222df 100644
--- a/target/linux/brcm2708/image/Makefile
+++ b/target/linux/brcm2708/image/Makefile
@@ -12,6 +12,10 @@ include $(INCLUDE_DIR)/host.mk
 FAT32_BLOCK_SIZE=1024
 FAT32_BLOCKS=$(shell echo $$(($(CONFIG_BRCM2708_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
 
+define Build/Compile
+	$(CP) $(LINUX_DIR)/COPYING $(KDIR)/COPYING.linux
+endef
+
 ### Image scripts ###
 define Build/kernel-img
 	perl $(LINUX_DIR)/scripts/mkknlimg $@ $@.tmp
@@ -21,7 +25,7 @@ endef
 define Build/boot-img
 	rm -f $@.boot
 	mkfs.fat -C $@.boot $(FAT32_BLOCKS)
-	mcopy -i $@.boot $(LINUX_DIR)/COPYING ::COPYING.linux
+	mcopy -i $@.boot $(KDIR)/COPYING.linux ::
 	mcopy -i $@.boot $(KDIR)/bootcode.bin ::
 	mcopy -i $@.boot $(KDIR)/LICENCE.broadcom ::
 	mcopy -i $@.boot $(KDIR)/start.elf ::