API Support for Beaglebone Blue Week-6

[Kiran Kumar Lekkala]

Couldn't do much this week, but luckily on schedule. This week, I accomplished the following:

1. APIs for I2C, SPI and UART added to the Beaglebone Blue API repository.

2. Math library and examples library updated according to the Strawson API repository and the respective changes updated for the individual drivers.

Next week;

1. Should be completing the PRU stuff and adding support for EQeP.