axi_mc_controller: updated core to latest axi interface implementation
axi_mc_current_monitor: updated core to latest axi interface implementation
axi_mc_speed: updated core to latest axi interface implementation
motor_control: Updated project to Vivado 14.2. Temporary removed XADC

- fixed constraints
- updated interrupt system
- used ad_iobuf
- The XADC was removed because the XADC IPI generates vaux inputs 0 and 10 even if 0 and 8 are selected