Changes

- McBSP_DX: Transmited serial data.<br> - McBSP_CLKX:&nbsp; Transmit serial clock.<br> - McBSP_FSX: Transmit frame syncronization.<br> - McBSP_DR: Received serial data.<br> - McBSP_CLKR: Received serial clock. Only in MCBSP1.<br> - McBSP_FSR:Received frame syncronization. Only in MCBSP1.<br> - McBSP_CLKS: External clock (shared by all McBSP modules).<br>