[source] sdk: clean scripts/config before packing tarball (FS#504)

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/90728c796d328f0c37475799711e88ba87259285

commit 90728c796d328f0c37475799711e88ba87259285
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Mon Feb 13 11:45:43 2017 +0100

    sdk: clean scripts/config before packing tarball (FS#504)
    
    Avoids shipping potentially incompatible object files and also reduces
    the tarball size
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 target/sdk/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/sdk/Makefile b/target/sdk/Makefile
index 719b659..ecaa015 100644
--- a/target/sdk/Makefile
+++ b/target/sdk/Makefile
@@ -137,6 +137,7 @@ $(BIN_DIR)/$(SDK_NAME).tar.xz: clean
 	find $(SDK_BUILD_DIR) -name .git | $(XARGS) rm -rf
 	find $(SDK_BUILD_DIR) -name .svn | $(XARGS) rm -rf
 	find $(SDK_BUILD_DIR) -name CVS | $(XARGS) rm -rf
+	-make -C $(SDK_BUILD_DIR)/scripts/config clean
 	(cd $(BUILD_DIR); \
 		tar -I 'xz -7e' -cf $@ $(SDK_NAME); \
 	)