hotplug2: restore accidentally deleted patch

Without the 170-non_fatal_include.patch hotplug2 throws this:

  Unable to include '/etc/hotplug2-platform.rules'
  Syntax error (/etc/hotplug2-common.rules, line 9): Syntax error: Internal parser error.
  Unable to include '/etc/hotplug2-common.rules'
  Syntax error (/etc/hotplug2-init.rules, line 3): Syntax error: Internal parser error.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35863 3c298f89-4303-0410-b956-a3cf2f4a3e73