Fix compile error when CONFIG_BOOTP_RANDOM_DELAY is set.

The option CONFIG_BOOTP_RANDOM_DELAY does not compile, because of a
missing extern inside the net/bootp.h header

Signed-off-by: Remy Bohmer <linux@bohmer.net>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
1 file changed