Hi,

This patch enables a number of drivers for the uml build, in preparation
for the uml framebuffer driver patch coming next ;)

Changes:

  * Include drivers/{input,char,video} in the uml kernel configuration,
    thus enabling the vt subsystem, input subsystem and the framebuffer
    console.
  * Add the console_use_vt variable to make the vt subsystem
    runtime-switchable.  That is needed because uml has it's own,
    special "uml console" driver for major #5, which can only be
    used if the vt subsystem doesn't grab #5.  The plan is to enable
    the vt subsystem only if we are going to use it for the framebuffer
    console, so the current behaviour remains unchanged if the
    framebuffer is not used.
  * A bunch of Kconfig tweaks to make the allmodconfig build fine by
    disabling drivers which either don't make sense or don't even build
    on uml.  Fortunaly CONFIG_PCI & friends catched most of them
    already ;)

pleae apply,

  Gerd

-- 
Gerd 'just married' Hoffmann <kraxel@suse.de>
I'm the hacker formerly known as Gerd Knorr.
http://www.suse.de/~kraxel/just-married.jpeg