7c32295b00 exposed a problem where the SDK
builds these shell scripts with a nonsensical absolute path for the DIR
variable. Use sed to patch in $STAGING_DIR_HOST.
Also remove PKG_RELEASE as that is nonsensical for tools.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/15841
Signed-off-by: Robert Marko <robimarko@gmail.com>