s6e63m0: Various changes

Signed-off-by: cocafe <cocafehj@gmail.com>
s6e63m0: Add night mode and sunlight mode

Darker than illumination = 1;
Brighter than maximum brightness in system UI.

And here are some opinions about the gamma table: (Not 100% correct)

[03]		0X18	(Main Color)		(R)
[05]		0X08	(Main Color)		(G)
[07]		0X24	(Main Color)		(B)

[09]		0XDC	(Tint Medium)		(R)
[11]		0XDD	(Tint Medium)		(G)
[13]		0XD0	(Tint Medium)		(B)

[15]		0XB5	(Tint Hard)		(R)
[17]		0XB5	(Tint Hard)		(G)
[19]		0XB6	(Tint Hard)		(B)

[21]		0X7F	(Tint Low)		(R)
[23]		0X8D	(Tine Low)		(G)
[25]		0X63	(Tine Low)		(B)

[27]		0XC5	(Brightness)		(R)
[29]		0XC8	(Brightness)		(G)
[31]		0XBA	(Brightness)		(B)

[33]		0X00	(Lighter? 0/1)		(R)
[35]		0X04	(Backlight)		(R)
[37]		0X00	(Lighter? 0/1)		(G)
[39]		0X01	(Backlight)		(G)
[41]		0X00	(Lighter? 0/1)		(B)
[43]		0X0E	(Backlight)		(B)

Signed-off-by: cocafe <cocafehj@gmail.com>