debug: Make CONFIG_EXPERT select CONFIG_DEBUG_KERNEL to unhide debug …

…options

Several debugging options currently default to y, such as
CONFIG_DEBUG_BUGVERBOSE and CONFIG_DEBUG_RODATA.  Embedded users
might want to turn those options off to save space; however,
turning them off requires turning on CONFIG_DEBUG_KERNEL to
unhide them.  Since CONFIG_DEBUG_KERNEL exists specifically to
unhide debugging options, and CONFIG_EXPERT exists specifically
to unhide options potentially needed by experts and/or embedded
users, make CONFIG_EXPERT automatically imply
CONFIG_DEBUG_KERNEL.

Signed-off-by: Josh Triplett <[email protected]>
Acked-by: Frederic Weisbecker <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/r/20110606012358.GA1909@leaf
Signed-off-by: Ingo Molnar <[email protected]>

init/Kconfig

@@ -909,6 +909,8 @@ config ANON_INODES
 
 menuconfig EXPERT
 	bool "Configure standard kernel features (expert users)"
+	# Unhide debug options, to make the on-by-default options visible
+	select DEBUG_KERNEL
 	help
 	  This option allows certain base kernel options and settings
           to be disabled or tweaked. This is for specialized