linux/net.h: use DYNAMIC_DEBUG_BRANCH in net_dbg_ratelimited

net_dbg_ratelimited tests the dynamic debug descriptor the old-fashioned
way, and doesn't utilize the static key/jump label implementation when
CONFIG_JUMP_LABEL is set.  Use the DYNAMIC_DEBUG_BRANCH which is defined
appropriately.

Link: http://lkml.kernel.org/r/20190212214150.4807-3-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/net.h

@@ -263,7 +263,7 @@ do {								\
 #define net_dbg_ratelimited(fmt, ...)					\
 do {									\
 	DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);			\
-	if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) &&	\
+	if (DYNAMIC_DEBUG_BRANCH(descriptor) &&				\
 	    net_ratelimit())						\
 		__dynamic_pr_debug(&descriptor, pr_fmt(fmt),		\
 		                   ##__VA_ARGS__);			\