fs: use our own mkpasswd when creating users

Export PATH=$(BR_PATH) so that our own mkpasswd is found before
any existing host-system one.

Reported-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Samuel Martin <s.martin49@gmail.com>
Tested-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

fs/common.mk

@@ -83,7 +83,7 @@ ifneq ($$(ROOTFS_USERS_TABLES),)
 	cat $$(ROOTFS_USERS_TABLES) >> $(USERS_TABLE)
 endif
 	printf '$(subst $(sep),\n,$(PACKAGES_USERS))' >> $(USERS_TABLE)
-	$(TOPDIR)/support/scripts/mkusers $(USERS_TABLE) $(TARGET_DIR) >> $(FAKEROOT_SCRIPT)
+	PATH=$(BR_PATH) $(TOPDIR)/support/scripts/mkusers $(USERS_TABLE) $(TARGET_DIR) >> $(FAKEROOT_SCRIPT)
 	echo "$$(ROOTFS_$(2)_CMD)" >> $$(FAKEROOT_SCRIPT)
 	chmod a+x $$(FAKEROOT_SCRIPT)
 	$$(HOST_DIR)/usr/bin/fakeroot -- $$(FAKEROOT_SCRIPT)