TPS65950 driver Merged

This week I developed a driver for the TPS65950 Power Management and System Companion Device commonly found on the BeagleBoard-xM. I implemented a basic I2C driver for the chip with support for the real-time clock peripheral. The code was merged today. Here are the commits:

• tps65950: driver for the TPS65950 PMIC
• readclock: code clean-up, add -q, manpage updates
• readclock.drv: add support for the TPS65950 RTC