[source] ar71xx: fix typo in image build code

[LEDE Commits]

mkresin pushed a commit to source.git, branch master:
https://git.lede-project.org/ec37a565878fd79d4127cbb843c17ce3b8dc97c0

commit ec37a565878fd79d4127cbb843c17ce3b8dc97c0
Author: Mathias Kresin <dev at kresin.me>
AuthorDate: Sun Sep 11 17:50:29 2016 +0200

    ar71xx: fix typo in image build code
    
    The kernel size isn't passed to the append-kernel build step and the
    resulting image bricks the device.
    
    Fixes FS#168.
    
    Signed-off-by: Mathias Kresin <dev at kresin.me>
---
 target/linux/ar71xx/image/generic.mk | 4 ++--
 target/linux/ar71xx/image/ubnt.mk    | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/target/linux/ar71xx/image/generic.mk b/target/linux/ar71xx/image/generic.mk
index bd92a84..10717cb 100644
--- a/target/linux/ar71xx/image/generic.mk
+++ b/target/linux/ar71xx/image/generic.mk
@@ -410,7 +410,7 @@ define Device/NBG6616
   CMDLINE += mem=128M
   IMAGES := sysupgrade.bin
   KERNEL := kernel-bin | patch-cmdline | lzma | uImage lzma | jffs2 boot/vmlinux.lzma.uImage
-  IMAGE/sysupgrade.bin = append-kernel $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel $$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
   # We cannot currently build a factory image. It is the sysupgrade image
   # prefixed with a header (which is actually written into the MTD device).
   # The header is 2kiB and is filled with 0xff. The format seems to be:
@@ -443,7 +443,7 @@ define Device/c-55
   KERNEL_SIZE = 2048k
   IMAGE_SIZE = 15872k
   MTDPARTS = spi0.0:256k(u-boot)ro,128k(u-boot-env)ro,2048k(kernel),13824k(rootfs),13824k(opt)ro,2624k(failsafe)ro,64k(art)ro,15872k at 0x60000(firmware)
-  IMAGE/sysupgrade.bin = append-kernel $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel $$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
 endef
 
 TARGET_DEVICES += c-55
diff --git a/target/linux/ar71xx/image/ubnt.mk b/target/linux/ar71xx/image/ubnt.mk
index 98c9ca0..99496f7 100644
--- a/target/linux/ar71xx/image/ubnt.mk
+++ b/target/linux/ar71xx/image/ubnt.mk
@@ -261,7 +261,7 @@ define Device/ubnt-uap-pro
   DEVICE_PROFILE := UBNT UAPPRO
   KERNEL := kernel-bin | patch-cmdline | lzma | uImage lzma | jffs2 kernel0
   IMAGES := sysupgrade.bin factory.bin
-  IMAGE/sysupgrade.bin = append-kernel $$$$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.bin = append-kernel $$(KERNEL_SIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)
   IMAGE/factory.bin = $$(IMAGE/sysupgrade.bin) | mkubntimage2
 endef