Added pti OSS driver from TDT

Tis is the PTI driver called public PTI. The public driver does not support
descrambling of the transport stream. The so called none public one is only
available as binary blob.

Signed-off-by: Christian Ege <k4230r6@gmail.com>
Moved smartcard driver to stm subdirectory

I moved the SCI or smartcard interface driver into the stm subdirectory.
It feels more suitable because the smartcard interface seems related to
the ST-40 CPU.

Signed-off-by: Christian Ege <k4230r6@gmail.com>