[AGPGART] x86-64 Kconfig fixes.

Offering the K7 GARTs on 64bit kernels causes sillyness, like reports of
"unrecognised device, try unsupported".  We don't want people to even try
that, so don't offer it in the first place.

There's really no good reason for offering any of the IA32 era GARTs on a
x86-64 64bit kernel. If Intel (or whoever) ever do an x86-64 clone, a new
gart driver will be started anyways, as has been done for amd-k8-agp.

drivers/char/agp/Kconfig

@@ -31,7 +31,7 @@ config AGP_GART
 
 config AGP_INTEL
 	tristate "Intel 440LX/BX/GX, I8xx and E7x05 support"
-	depends on AGP
+	depends on AGP && !X86_64
 	help
 	  This option gives you AGP support for the GLX component of the
 	  XFree86 4.x on Intel 440LX/BX/GX, 815, 820, 830, 840, 845, 850, 860
@@ -44,7 +44,7 @@ config AGP_INTEL
 
 #config AGP_I810
 #	tristate "Intel I810/I815/I830M (on-board) support"
-#	depends on AGP
+#	depends on AGP && !X86_64
 #	help
 #	  This option gives you AGP support for the Xserver on the Intel 810
 #	  815 and 830m chipset boards for their on-board integrated graphics. This
@@ -52,7 +52,7 @@ config AGP_INTEL
 
 config AGP_VIA
 	tristate "VIA chipset support"
-	depends on AGP
+	depends on AGP && !X86_64
 	help
 	  This option gives you AGP support for the GLX component of the
 	  XFree86 4.x on VIA MPV3/Apollo Pro chipsets.
@@ -62,7 +62,7 @@ config AGP_VIA
 
 config AGP_AMD
 	tristate "AMD Irongate, 761, and 762 support"
-	depends on AGP
+	depends on AGP && !X86_64
 	help
 	  This option gives you AGP support for the GLX component of the
 	  XFree86 4.x on AMD Irongate, 761, and 762 chipsets.
@@ -72,7 +72,7 @@ config AGP_AMD
 
 config AGP_SIS
 	tristate "Generic SiS support"
-	depends on AGP
+	depends on AGP && !X86_64
 	help
 	  This option gives you AGP support for the GLX component of the "soon
 	  to be released" XFree86 4.x on Silicon Integrated Systems [SiS]
@@ -85,7 +85,7 @@ config AGP_SIS
 
 config AGP_ALI
 	tristate "ALI chipset support"
-	depends on AGP
+	depends on AGP && !X86_64
 	---help---
 	  This option gives you AGP support for the GLX component of the
 	  XFree86 4.x on the following ALi chipsets.  The supported chipsets
@@ -103,7 +103,7 @@ config AGP_ALI
 
 config AGP_SWORKS
 	tristate "Serverworks LE/HE support"
-	depends on AGP
+	depends on AGP && !X86_64
 	help
 	  Say Y here to support the Serverworks AGP card.  See 
 	  <http://www.serverworks.com/> for product descriptions and images.