1. No need to explicitly call the defaults
2. There is efficient way how to set PKG_BUILD_DIR,
which allows to drop PKG_SOURCE_DIR.
Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/19105
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
e7044dce96