Add DTS for the TT3201 Can Bus cape

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
MCP2515 device tree support
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Merge pull request #42 from dwery/towertech-tt3201-can-cape

Towertech tt3201 can cape