Enable lguest drivers in Kconfig

Lguest drivers need to default to "Y" otherwise they're never selected
for new builds.  (We don't bother prompting, because they're less than
4k combined, and implied by selecting lguest support).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/lguest/Kconfig

@@ -21,8 +21,10 @@ config LGUEST_GUEST
 
 config LGUEST_NET
 	tristate
+	default y
 	depends on LGUEST_GUEST && NET
 
 config LGUEST_BLOCK
 	tristate
+	default y
 	depends on LGUEST_GUEST && BLOCK