net: Fix Kconfig indentation

Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
    $ sed -e 's/^        /\t/' -i */Kconfig

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ife/Kconfig b/net/ife/Kconfig
index 6cd1f6d..bcf6505 100644
--- a/net/ife/Kconfig
+++ b/net/ife/Kconfig
@@ -5,7 +5,7 @@
 
 menuconfig NET_IFE
 	depends on NET
-        tristate "Inter-FE based on IETF ForCES InterFE LFB"
+	tristate "Inter-FE based on IETF ForCES InterFE LFB"
 	default n
 	help
 	  Say Y here to add support of IFE encapsulation protocol