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.

common_features.mk

@@ -61,8 +61,8 @@ endif
 
 ifeq ($(strip $(STENO_ENABLE)), yes)
     OPT_DEFS += -DSTENO_ENABLE
-	VIRTSER_ENABLE := yes
-	SRC += $(QUANTUM_DIR)/process_keycode/process_steno.c
+    VIRTSER_ENABLE := yes
+    SRC += $(QUANTUM_DIR)/process_keycode/process_steno.c
 endif
 
 ifeq ($(strip $(VIRTSER_ENABLE)), yes)
@@ -75,9 +75,9 @@ ifeq ($(strip $(FAUXCLICKY_ENABLE)), yes)
 endif
 
 ifeq ($(strip $(POINTING_DEVICE_ENABLE)), yes)
-	OPT_DEFS += -DPOINTING_DEVICE_ENABLE
-	OPT_DEFS += -DMOUSE_ENABLE
-	SRC += $(QUANTUM_DIR)/pointing_device.c
+    OPT_DEFS += -DPOINTING_DEVICE_ENABLE
+    OPT_DEFS += -DMOUSE_ENABLE
+    SRC += $(QUANTUM_DIR)/pointing_device.c
 endif
 
 ifeq ($(strip $(UCIS_ENABLE)), yes)
@@ -110,12 +110,14 @@ ifeq ($(strip $(RGBLIGHT_ENABLE)), yes)
     ifeq ($(strip $(RGBLIGHT_CUSTOM_DRIVER)), yes)
         OPT_DEFS += -DRGBLIGHT_CUSTOM_DRIVER
     else
-	    SRC += ws2812.c
+        SRC += ws2812.c
     endif
 endif
 
 ifeq ($(strip $(RGB_MATRIX_ENABLE)), yes)
     OPT_DEFS += -DRGB_MATRIX_ENABLE
+    OPT_DEFS += -DIS31FL3731
+    COMMON_VPATH += $(DRIVER_PATH)/issi
     SRC += is31fl3731.c
     SRC += i2c_master.c
     SRC += $(QUANTUM_DIR)/color.c
@@ -123,6 +125,28 @@ ifeq ($(strip $(RGB_MATRIX_ENABLE)), yes)
     CIE1931_CURVE = yes
 endif
 
+ifeq ($(strip $(RGB_MATRIX_ENABLE)), IS31FL3731)
+    OPT_DEFS += -DRGB_MATRIX_ENABLE
+    OPT_DEFS += -DIS31FL3731
+    COMMON_VPATH += $(DRIVER_PATH)/issi
+    SRC += is31fl3731.c
+    SRC += i2c_master.c
+    SRC += $(QUANTUM_DIR)/color.c
+    SRC += $(QUANTUM_DIR)/rgb_matrix.c
+    CIE1931_CURVE = yes
+endif
+
+ifeq ($(strip $(RGB_MATRIX_ENABLE)), IS31FL3733)
+    OPT_DEFS += -DRGB_MATRIX_ENABLE
+    OPT_DEFS += -DIS31FL3733
+    COMMON_VPATH += $(DRIVER_PATH)/issi
+    SRC += is31fl3733.c
+    SRC += i2c_master.c
+    SRC += $(QUANTUM_DIR)/color.c
+    SRC += $(QUANTUM_DIR)/rgb_matrix.c
+    CIE1931_CURVE = yes
+endif
+
 ifeq ($(strip $(TAP_DANCE_ENABLE)), yes)
     OPT_DEFS += -DTAP_DANCE_ENABLE
     SRC += $(QUANTUM_DIR)/process_keycode/process_tap_dance.c
@@ -169,7 +193,7 @@ ifeq ($(strip $(BACKLIGHT_ENABLE)), yes)
     ifeq ($(strip $(VISUALIZER_ENABLE)), yes)
         CIE1931_CURVE = yes
     endif
-		ifeq ($(strip $(BACKLIGHT_CUSTOM_DRIVER)), yes)
+        ifeq ($(strip $(BACKLIGHT_CUSTOM_DRIVER)), yes)
         OPT_DEFS += -DBACKLIGHT_CUSTOM_DRIVER
     endif
 endif
@@ -200,7 +224,7 @@ endif
 
 ifeq ($(strip $(HD44780_ENABLE)), yes)
     SRC += drivers/avr/hd44780.c
-	OPT_DEFS += -DHD44780_ENABLE
+    OPT_DEFS += -DHD44780_ENABLE
 endif
 
 QUANTUM_SRC:= \