batman-adv: Use enums for related constants

CodingStyle "Chapter 12: Macros, Enums and RTL" recommends to use enums
for several related constants. Internal states can be used without
defining the actual value, but all values which are visible to the
outside must be defined as before. Normal values are assigned as usual
and flags are defined by shifts of a bit.

Signed-off-by: Sven Eckelmann <sven@narfation.org>

net/batman-adv/main.h

@@ -72,9 +72,11 @@
 #define RESET_PROTECTION_MS 30000
 #define EXPECTED_SEQNO_RANGE	65536
 
-#define MESH_INACTIVE 0
-#define MESH_ACTIVE 1
-#define MESH_DEACTIVATING 2
+enum mesh_state {
+	MESH_INACTIVE,
+	MESH_ACTIVE,
+	MESH_DEACTIVATING
+};
 
 #define BCAST_QUEUE_LEN		256
 #define BATMAN_QUEUE_LEN	256
@@ -89,10 +91,11 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 /* all messages related to routing / flooding / broadcasting / etc */
-#define DBG_BATMAN 1
-/* route or tt entry added / changed / deleted */
-#define DBG_ROUTES 2
-#define DBG_ALL 3
+enum dbg_level {
+	DBG_BATMAN = 1 << 0,
+	DBG_ROUTES = 1 << 1, /* route added / changed / deleted */
+	DBG_ALL    = 3
+};
 
 
 /*