[PATCH net-next] net: kcov: don't select SKB_EXTENSIONS when there is no NET

[Randy Dunlap]

Fix kconfig warning when CONFIG_NET is not set/enabled:

WARNING: unmet direct dependencies detected for SKB_EXTENSIONS
  Depends on [n]: NET [=n]
  Selected by [y]:
  - KCOV [=y] && ARCH_HAS_KCOV [=y] && (CC_HAS_SANCOV_TRACE_PC [=y] || GCC_PLUGINS [=n])

Fixes: 6370cc3bbd8a ("net: add kcov handle to skb extensions")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Aleksandr Nogikh <nogikh@xxxxxxxxxx>
Cc: Willem de Bruijn <willemb@xxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: linux-next@xxxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
---
This is from linux-next. I'm only guessing that it is in net-next.

 lib/Kconfig.debug |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20201110.orig/lib/Kconfig.debug
+++ linux-next-20201110/lib/Kconfig.debug
@@ -1874,7 +1874,7 @@ config KCOV
 	depends on CC_HAS_SANCOV_TRACE_PC || GCC_PLUGINS
 	select DEBUG_FS
 	select GCC_PLUGIN_SANCOV if !CC_HAS_SANCOV_TRACE_PC
-	select SKB_EXTENSIONS
+	select SKB_EXTENSIONS if NET
 	help
 	  KCOV exposes kernel code coverage information in a form suitable
 	  for coverage-guided fuzzing (randomized testing).