Adding initial matrix configuration structure

- Uses strobe setup from MatrixARM
- New mapping for ADC sense
- Initial ADC setup code (not optimized or configurable yet)

Scan/CapSense/matrix_setup.h

@@ -16,5 +16,12 @@
 
 #pragma once
 
-// TODO
+// ----- Macros -----
+
+// Convenience Macros
+#define gpio( port, pin ) { Port_##port, Pin_##pin }
+#define sense( port, pin, adc, ch ) { Port_##port, Pin_##pin, ADC_##adc, Channel_##ch }
+#define Matrix_colsNum sizeof( Matrix_cols ) / sizeof( GPIO_Pin )
+#define Matrix_rowsNum sizeof( Matrix_rows ) / sizeof( GPIO_Pin )
+#define Matrix_maxKeys sizeof( Matrix_scanArray ) / sizeof( KeyState )