busybox: Get part of the hack back

Need to avoid conflicts between busybox and netifd

patches/openwrt/hack/0001-busybox-Try-to-install-everything-into-s-bin.patch

+From 709c24eb908ceb268c9dcb1b8665716c33d3dbef Mon Sep 17 00:00:00 2001
+From: Michal Hrusecky <Michal@Hrusecky.net>
+Date: Tue, 27 Feb 2018 17:24:33 +0100
+Subject: [PATCH] busybox: Try to install everything into /{s,}bin
+
+Signed-off-by: Michal Hrusecky <Michal@Hrusecky.net>
+---
+ package/utils/busybox/Makefile | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/package/utils/busybox/Makefile b/package/utils/busybox/Makefile
+index fc882d3..5d4ba1d 100644
+--- a/package/utils/busybox/Makefile
++++ b/package/utils/busybox/Makefile
+@@ -132,6 +132,8 @@ endef
+ define Package/busybox/install
+ 	$(INSTALL_DIR) $(1)/etc/init.d
+ 	$(CP) $(PKG_INSTALL_DIR)/* $(1)/
++	[ -e $(1)/usr/bin/env ] || ln -s ../../bin/busybox $(1)/usr/bin/env
++	rm -f $(1)/sbin/ifup $(1)/sbin/ifdown
+ ifneq ($(CONFIG_BUSYBOX_$(BUSYBOX_SYM)_CROND),)
+ 	$(INSTALL_BIN) ./files/cron $(1)/etc/init.d/cron
+ endif
+-- 
+2.16.2
+