debugging: do not require no stripping

The stripping options operate on the final image and not the intermediate
builds, so requiring stripping to be disabled just to enable debugging
options doesn't make much sense.  Especially when working with gdbserver:
only the host needs the debugging information to be available.  The board
can run & debug perfectly fine without it.

Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

Config.in

@@ -219,14 +219,14 @@ choice
 
 config BR2_STRIP_strip
 	bool "strip"
-	depends on !BR2_ENABLE_DEBUG && !BR2_ELF2FLT
+	depends on !BR2_ELF2FLT
 	help
 	  strip   is the normal strip command
 
 config BR2_STRIP_sstrip
 	bool "sstrip"
 	select BR2_PACKAGE_SSTRIP_HOST
-	depends on !BR2_ENABLE_DEBUG && !BR2_ELF2FLT
+	depends on !BR2_ELF2FLT
 	help
 	  sstrip  is a strip that discards more than the normal strip