[AGPGART] Mention Intel 875 support in Kconfig.

drivers/char/agp/Kconfig

@@ -80,8 +80,8 @@ config AGP_INTEL
 	tristate "Intel 440LX/BX/GX, I8xx and E7x05 chipset support"
 	depends on AGP && X86 && !X86_64
 	help
-	  This option gives you AGP support for the GLX component of
-	  XFree86 4.x on Intel 440LX/BX/GX, 815, 820, 830, 840, 845, 850, 860
+	  This option gives you AGP support for the GLX component of XFree86 4.x
+	  on Intel 440LX/BX/GX, 815, 820, 830, 840, 845, 850, 860, 875,
 	  E7205 and E7505 chipsets and full support for the 810, 815, 830M, 845G,
 	  852GM, 855GM and 865G integrated graphics chipsets.