sd-netlink: rename sd_netlink_inc_rcvbuf → sd_netlink_increase_rxbuf

We have RxBufferSize= and TxBufferSize= in .link files. Let's use the same
abbreviation here. OTOH, "inc" could be short for "increment" or "increase",
let's avoid that.

src/network/networkctl.c

@@ -692,7 +692,7 @@ static void acquire_wlan_link_info(LinkInfo *link) {
                 return;
         }
 
-        (void) sd_netlink_inc_rcvbuf(genl, RCVBUF_SIZE);
+        (void) sd_netlink_increase_rxbuf(genl, RCVBUF_SIZE);
 
         r = wifi_get_interface(genl, link->ifindex, &link->wlan_iftype, &link->ssid);
         if (r < 0)

src/network/networkd-manager.c

@@ -226,7 +226,7 @@ static int manager_connect_genl(Manager *m) {
         if (r < 0)
                 return r;
 
-        r = sd_netlink_inc_rcvbuf(m->genl, RCVBUF_SIZE);
+        r = sd_netlink_increase_rxbuf(m->genl, RCVBUF_SIZE);
         if (r < 0)
                 log_warning_errno(r, "Failed to increase receive buffer size for general netlink socket, ignoring: %m");
 
@@ -298,7 +298,7 @@ static int manager_connect_rtnl(Manager *m) {
          * case systemd sets the receive buffer size for us, and the value in the .socket unit
          * should take full effect. */
         if (fd < 0) {
-                r = sd_netlink_inc_rcvbuf(m->rtnl, RCVBUF_SIZE);
+                r = sd_netlink_increase_rxbuf(m->rtnl, RCVBUF_SIZE);
                 if (r < 0)
                         log_warning_errno(r, "Failed to increase receive buffer size for rtnl socket, ignoring: %m");
         }