[patch] man for vgafb(4) should have list of supported architectures

[IL Ka]

diff --git share/man/man4/vgafb.4 share/man/man4/vgafb.4
index d9ccfa469..6e9a9875c 100644
--- share/man/man4/vgafb.4
+++ share/man/man4/vgafb.4
@@ -31,6 +31,7 @@
 .Nm vgafb
 .Nd VGA frame buffer
 .Sh SYNOPSIS
+.Cd # sparc64, macppc
 .Cd "vgafb* at pci?"
 .Cd "wsdisplay* at vgafb?"
 .Sh DESCRIPTION