[PATCH] Fix headers and add RTC to altera-cyclone-v BSP.

[Christian Mauderer]

Hello,

I have three patches for the altera-cyclone-v BSP.

The first adds some missing header files to the BSP installation. Without these
headers, some other headers from the hwlib directory can't be used.

With the second patch a simple I2C driver is added. The third one adds a driver
for the RTC chip on the evaluation board (a DS1339).

Kind regards,

Christian Mauderer