vesa(4) and amd64

[ddk ddk]

very good

possible after http://svn.freebsd.org/viewvc/base?view=revision&revision=197174

i have no freezing any more

so there is no problem

and we can enable for amd64 arch all avail text mode from BIOS

this patch

--- src/sys/dev/fb/vga.c.orig  2009-09-14 04:04:30.000000000 +0400
+++ src/sys/dev/fb/vga.c       2009-09-14 04:05:30.000000000 +0400
@@ -177,7 +177,7 @@
 #endif

 /* architecture dependent option */
-#ifndef __i386__
+#if !defined(__i386__) && !defined(__amd64__)
 #define VGA_NO_BIOS            1
 #endif