CONFIG_AGP_AMD_8151 Configure.help entry

@@ -3543,6 +3543,13 @@
   You should say Y here if you use XFree86 3.3.6 or 4.x and want to
   use GLX or DRI.  If unsure, say N.
 
+CONFIG_AGP_AMD_8151
+  This option gives you AGP support for the GLX component of
+  XFree86 on AMD K8 with an AGP 8151 chipset.
+
+  You should say Y here if you use XFree86 3.3.6 or 4.x and want to
+  use GLX or DRI.  If unsure, say N.
+
 Generic SiS support
 CONFIG_AGP_SIS
   This option gives you AGP support for the GLX component of the "soon