[PATCH] missing dependency on sparc64

CONFIG_HW_CONSOLE selects vt.c; without the stuff pulled by CONFIG_VT it
will not build.  Normally we get both in drivers/char/Kconfig and there
HW_CONSOLE depends on VT.  sparc64 does not pull drivers/char/Kconfig
and has that sutff in arch/sparc64/Kconfig instead.  However, it forgets
to add the same dependency.  As the result, turning VT off [which is
possible] will end up with broken build.  For no good reason... 

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>