commit 0954828fcbf3bd13d593499b16b901a4e801b0b9 ("kconfig: replace

commit 0954828fcbf3bd13d593499b16b901a4e801b0b9 ("kconfig: replace
KERNELVERSION usage by the mainmenu's prompt") made the kernel version
disappear from the generated .config file when configuring for UML.  As
UML's Kconfig doesn't have a mainmenu, kconfig falls back to the default
string "Linux Kernel Configuration".

Add a suitable mainmenu to the main UML Kconfig file to fix this.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>