[AGPGART] Enable Intel AGP support for x86-64 again.

The previous commit that killed off the _mch driver forgot
to reenable the old driver.
Signed-off-by: Dave Jones <davej@redhat.com>

drivers/char/agp/Kconfig

@@ -78,7 +78,7 @@ config AGP_AMD64
 
 config AGP_INTEL
 	tristate "Intel 440LX/BX/GX, I8xx and E7x05 chipset support"
-	depends on AGP && X86 && !X86_64
+	depends on AGP && X86
 	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, 875,