Clear PNOR patch location while updating symlinks

- If the user has activated a new image, then clear all
  PNOR patches under /usr/local/share/pnor/ before the
  new HOST version powers on (i.e. during symlink updates).

Resolves openbmc/openbmc#2273

Change-Id: I3ce3709a6813beaac812f3d1c00b065bad04d2fe
Signed-off-by: Saqib Khan <khansa@us.ibm.com>
1 file changed