Parallelize via per-package target dirs

Change-Id: I781adb384d3da34823d082a23c0db68ed7589975
diff --git a/configs/czechlight_clearfog_defconfig b/configs/czechlight_clearfog_defconfig
index bf75605..2edaccf 100644
--- a/configs/czechlight_clearfog_defconfig
+++ b/configs/czechlight_clearfog_defconfig
@@ -8,6 +8,7 @@
 BR2_STRIP_EXCLUDE_DIRS="/usr/lib/libyang /usr/lib/sysrepo"
 BR2_GLOBAL_PATCH_DIR="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/common/patches"
 BR2_REPRODUCIBLE=y
+BR2_PER_PACKAGE_DIRECTORIES=y
 BR2_SSP_STRONG=y
 BR2_TOOLCHAIN_EXTERNAL=y
 BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY=y