Bug 868896: Support AT+CPINR for PUK locks

This patch adds support 'SIM PUK' to the AT command +CPINR in
the emulator. Most of the necessary infrastructure is already
in place.

Signed-off-by: Thomas Zimmermann <tdz@users.sourceforge.net>
Merge pull request #38 from tdz/bug-868896

Bug 868896: Support AT+CPINR for PUK locks. r=vicamo