bgpd: Optimize memory usage for bgp_damp_config struct

```
struct bgp_damp_config {
        unsigned int               suppress_value;       /*     0     4 */
        unsigned int               reuse_limit;          /*     4     4 */
        time_t                     max_suppress_time;    /*     8     8 */
        time_t                     half_life;            /*    16     8 */
        unsigned int               reuse_list_size;      /*    24     4 */
        unsigned int               reuse_index_size;     /*    28     4 */
        unsigned int               ceiling;              /*    32     4 */
        unsigned int               decay_rate_per_tick;  /*    36     4 */
        unsigned int               decay_array_size;     /*    40     4 */
        unsigned int               reuse_scale_factor;   /*    44     4 */
        double                     scale_factor;         /*    48     8 */
        double *                   decay_array;          /*    56     8 */
        /* --- cacheline 1 boundary (64 bytes) --- */
        int *                      reuse_index;          /*    64     8 */
        struct bgp_damp_info * *   reuse_list;           /*    72     8 */
        int                        reuse_offset;         /*    80     4 */
        safi_t                     safi;                 /*    84     4 */
        struct bgp_damp_info *     no_reuse_list;        /*    88     8 */
        struct event *             t_reuse;              /*    96     8 */
        afi_t                      afi;                  /*   104     4 */

        /* size: 112, cachelines: 2, members: 19 */
        /* padding: 4 */
        /* last cacheline: 48 bytes */
};   /* saved 8 bytes! */
```

Signed-off-by: Donatas Abraitis <[email protected]>

bgpd/bgp_damp.h

@@ -74,8 +74,8 @@ struct bgp_damp_config {
 	unsigned int ceiling;		  /* Max value a penalty can attain */
 	unsigned int decay_rate_per_tick; /* Calculated from half-life */
 	unsigned int decay_array_size; /* Calculated using config parameters */
-	double scale_factor;
 	unsigned int reuse_scale_factor;
+	double scale_factor;
 
 	/* Decay array per-set based. */
 	double *decay_array;
@@ -86,6 +86,7 @@ struct bgp_damp_config {
 	/* Reuse list array per-set based. */
 	struct bgp_damp_info **reuse_list;
 	int reuse_offset;
+	safi_t safi;
 
 	/* All dampening information which is not on reuse list.  */
 	struct bgp_damp_info *no_reuse_list;
@@ -94,7 +95,6 @@ struct bgp_damp_config {
 	struct event *t_reuse;
 
 	afi_t afi;
-	safi_t safi;
 };
 
 #define BGP_DAMP_NONE           0