Split Chip class into Device and Chip.

Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>

src/Device.cpp

@@ -0,0 +1,10 @@
+#include "stdafx.h"
+#include "Device.h"
+
+void EightBit::Device::powerOn() {
+	raise(POWER());
+}
+
+void EightBit::Device::match(PinLevel& line, int value) {
+	value ? raise(line) : lower(line);
+}