ISSI31FL3733 driver (#3679)

* ISSI31FL3733 driver

- Addapted IS31 driver for the above driver

* fix my branch

* ISSI31FL3733 driver

- Inclusion of above ISSI led driver

* IS31fl3733 driver

- Added correct function for control registers

* Finalized support for ISSI31fl3733 led driver

- Finalized and tested driver.
- Modified i2c_master for arm due to declaration mistake.
- Fixed spaces/tabs in quantum.h file.
- Fixed spaces/tabs in common_features.mk file.
- Removed unnecessary includes from rgb_matrix.c file.
- Added local definitions for MIN and MAX macros in rgb_matrix.c file.
- Adjusted chevron effect.
- Added necessary define (RGB_3733_MATRIX_ENABLE) for makefile.
- Added necessary C define (ISSI3733) to aid with inclusion of the correct header file.
- Added documentation for the new driver.

* Driver structure update

- Changed rule includes to be more condensed (RGB_MATRIX_ENABLE = IS31FL3731) and (RGB_MATRIX_ENABLE = IS31FL3733)
- Updated documentation
- Reverted to the use of differently named functions for each driver and selecting the needed ones within rgb_matrix.c

* ISSI Drivers refractoring

- Moved issi drivers in a dedicated folder
- Updated documentation

* I2C library fix

I released the special pins incorrectly before. It is now fixed.

quantum/rgb_matrix.h

@@ -1,5 +1,6 @@
 /* Copyright 2017 Jason Williams
  * Copyright 2017 Jack Humbert
+ * Copyright 2018 Yiancar
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,9 +22,14 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include "color.h"
-#include "is31fl3731.h"
 #include "quantum.h"
 
+#ifdef IS31FL3731
+    #include "is31fl3731.h"
+#elif defined (IS31FL3733)
+    #include "is31fl3733.h"
+#endif
+
 typedef struct Point {
 	uint8_t x;
 	uint8_t y;