This is a introduction for flashlight chip MT6336

[Scope]
- Two channel for two LEDs


[Hardware Interface]
- I2C
	* For general control
	* Slave address 0x55, 0x56, 0x57, 0x58


[Limit]
- Channel couple:
	* Flash/Torch enable
	* Flash/Torch LED current source
	* Flash mode watchdog timer
	* Torch mode watchdog timer
	* Flash/Torch timeout
	* Flash mode step up/down timing (default: 10 us)
	* Flash mode output regulation voltage (default: 5.0 V)

- Channel decouple:
	* Flash/Torch mode enable
	* Brightness level

- Torch Mode
	* Step current: 12.5 mA
	* Min currnet: 12.5 mA
	* Max current: 200 mA

- Flash Mode
	* Step current: 12.5 mA
	* Min currnet: 12.5 mA
	* Max current: 1500 mA
	* Max current for two channel: 2500 mA
	* Min protected timeout: 200 ms
	* Max protected timeout: 800 ms

