am dffa1806: pppd: Remove the UID check to allow running as a non-root user.

Merge commit 'dffa18062629fab18e536d21fe5f8b8f07c7e991'

* commit 'dffa18062629fab18e536d21fe5f8b8f07c7e991':
  pppd: Remove the UID check to allow running as a non-root user.