[source] sdk: depend on linux/install

[LEDE Commits]

jow pushed a commit to source.git, branch master:
https://git.lede-project.org/5a37d0601a5431e5c6c721d1ed39a80568b54679

commit 5a37d0601a5431e5c6c721d1ed39a80568b54679
Author: Jo-Philipp Wich <jo at mein.io>
AuthorDate: Fri Nov 4 16:12:51 2016 +0100

    sdk: depend on linux/install
    
    Since commit 484cb91 "sdk: bundle required firmware files" there is an
    implicit dependency of the SDK on a prior Kernel compilation.
    
    Change target/Makefile to make this dependency explicit to avoid race
    conditions with parallel builds.
    
    Signed-off-by: Jo-Philipp Wich <jo at mein.io>
---
 target/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/Makefile b/target/Makefile
index cb68454..db87c78 100644
--- a/target/Makefile
+++ b/target/Makefile
@@ -10,6 +10,7 @@ $(curdir)/builddirs:=linux sdk imagebuilder toolchain
 $(curdir)/builddirs-default:=linux
 $(curdir)/builddirs-install:=linux $(if $(CONFIG_SDK),sdk) $(if $(CONFIG_IB),imagebuilder) $(if $(CONFIG_MAKE_TOOLCHAIN),toolchain)
 
+$(curdir)/sdk/install:=$(curdir)/linux/install
 $(curdir)/imagebuilder/install:=$(curdir)/linux/install
 
 $(eval $(call stampfile,$(curdir),target,prereq,.config))