New i915 graphic and WXGA

[Andrey Fesenko]

Hello, i'm test new driver
https://wiki.freebsd.org/Graphics/Update%20i915%20GPU%20driver%20to%20Linux%203.8

My monitor have WXGA+ 16:10 1440 900, not correct detected, only 4:3
Modeline. Full log https://bsdnir.info/files/Xorg.i915_01-16.log

CPU: Intel(R) Core(TM) i5-4570 CPU @ 3.20GHz (3192.68-MHz K8-class CPU)
vgapci0 at pci0:0:2:0:     class=0x030000 card=0xd0001458 chip=0x04128086
rev=0x06 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Xeon E3-1200 v3/4th Gen Core Processor Integrated
Graphics Controller'
    class      = display
    subclass   = VGA