[Keyboard] LFK78 refactor (#7835)

* Change include guards to pragma once

* Clean up default keymaps

* Remove some magic numbers and use GPIO macros

* Clean up keyboard.[ch]

* Tidy up info.json and readme

* Align config.h with template

* Split up revision code into subfolders

* rev C-H has no audio, apparently

* Change revc_h to revc and document differences

* Turn off Audio on revb for now, for Travis' sake

* Split info.json into revision folders

* Clean up default keymaps some more

keyboards/lfkeyboards/lfk78/revc/config.h

@@ -0,0 +1,21 @@
+#pragma once
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 18
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+ */
+#define MATRIX_ROW_PINS { D2, D3, D4, D5, D6 }
+#define MATRIX_COL_PINS { A0, A1, A2, A3, A4, A5, A6, A7, E6, E7, F0, F1, F2, F3, C0, C1, C2, C3 }
+#define UNUSED_PINS
+
+#define RGBLED_NUM 27