1920x1200 support?

[UrosBerglez]

Is it possible to add support for 1920x1200 monitors?
xrandr --props outputs for:

Onboard HDMI

	EDID: 
		00ffffffffffff004a8b601501010101
		0e1f010380140d783eee91a3544c9926
		0f5054210800d1c081c0a9c001010101
		0101010101013b3e80d370b02e403020
		350068be1000001e000000fc0048444d
		490a2020202020202020000000ff0064
		656d6f7365742d310a203020000000fd
		00303f545415010a2020202020200176
		020335f24a04051013141f01021112e2
		00d5e305c00023097f07830100006703
		0c001000183ce6060501626200681a00
		000101303f023a801871382d40580f25
		00cb880000009e000000000000000000
		00000000000000000000000000000000
		00000000000000000000000000000000
		00000000000000000000000000000086
	GAMMA_LUT_SIZE: 4096 
		range: (0, -1)
	DEGAMMA_LUT_SIZE: 4096 
		range: (0, -1)
	GAMMA_LUT: 0 
		range: (0, 65535)
	CTM: 0 
	DEGAMMA_LUT: 0 
		range: (0, 65535)
	TearFree: auto 
		supported: off, on, auto
	HDCP Content Type: HDCP Type0 
		supported: HDCP Type0, HDCP Type1
	Content Protection: Undesired 
		supported: Undesired, Desired, Enabled
	vrr_capable: 0 
		range: (0, 1)
	Colorspace: Default 
		supported: Default, BT709_YCC, opRGB, BT2020_RGB, BT2020_YCC
	content type: No Data 
		supported: No Data, Graphics, Photo, Cinema, Game
	max bpc: 16 
		range: (8, 16)
	underscan vborder: 0 
		range: (0, 128)
	underscan hborder: 0 
		range: (0, 128)
	underscan: off 
		supported: off, on, auto
	scaling mode: None 
		supported: None, Full, Center, Full aspect
	link-status: Good 
		supported: Good, Bad
	CONNECTOR_ID: 95 
		supported: 95
	non-desktop: 0 
		range: (0, 1)
   1920x1200     60.00 +
   1920x1080     60.00    60.00    50.00    59.94  
   1600x1200     60.00  
   1680x1050     60.00  
   1600x900      60.00  
   1280x1024     60.00  
   1440x900      60.00  
   1280x800      60.00  
   1280x720      60.00    50.00    59.94  
   1024x768      60.00  
   800x600       60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       60.00    59.94  

When connected to ms912x:

	EDID: 
		00ffffffffffff004a8b601501010101
		0e1f010380140d783eee91a3544c9926
		0f5054210800d1c081c0a9c001010101
		0101010101013b3e80d370b02e403020
		350068be1000001e000000fc0048444d
		490a2020202020202020000000ff0064
		656d6f7365742d310a203020000000fd
		00303f545415010a2020202020200176
		020335f24a04051013141f01021112e2
		00d5e305c00023097f07830100006703
		0c001000183ce6060501626200681a00
		000101303f023a801871382d40580f25
		00cb880000009e000000000000000000
		00000000000000000000000000000000
		00000000000000000000000000000000
		00000000000000000000000000000086
	PRIME Synchronization: 0 
		supported: 0, 1
	link-status: Good 
		supported: Good, Bad
	CONNECTOR_ID: 32 
		supported: 32
	non-desktop: 0 
		range: (0, 1)
   1920x1080     60.00    60.00    59.94  
   1280x720      60.00    59.94  
   1024x768      60.00  
   800x600       60.32  
   720x480       60.00    59.94  
   640x480       60.00    59.94 ```

[rhgndf]

See #19