Update comments and README

ChangeLog

@@ -9052,7 +9052,7 @@
 	  netdev_txnotify.c which, in turn, for changes to arp/arp_send.c,
 	  icmp/icmp_ping.c, socket/net_sendfile.c, recvfrom.c, sendto.c,
 	  tcp/tcp_send_buffered.c, and tcp_send_unbuffered.c (2014-11-23).
-	* arch/arm/src/kl/chip/kl_i2c.h: "I2C header file for the Freescale KL
+	* arch/arm/src/kl/chip/kl_i2c.h:  I2C header file for the Freescale KL
 	  family.  From Alan Carvalho de Assis (2014-11-23).
-	* include/nuttx/fs/fs.h: Fix typo in confiditional compilation.  From
+	* include/nuttx/fs/fs.h: Fix typo in conditional compilation.  From
 	  Alan Carvalho de Assis (2014-11-23).

configs/sama5d3-xplained/README.txt

@@ -2907,7 +2907,17 @@ Configurations
        the warning in the section "Information Common to All Configurations"
        for further information.
 
-    3. You will almost certainly need to adapt this configuration to
+    3. This configuration executes out of SDRAM flash and is loaded into
+       SDRAM from NAND, Serial DataFlash, SD card or from a TFTPC sever via
+       U-Boot or BareBox.  Data also is positioned in SDRAM.
+
+       I did most testing with nuttx.bin on an SD card.  These are the
+       commands that I used to boot NuttX from the SD card:
+
+         U-Boot> fatload mmc 0 0x20008000 nuttx.bin
+         U-Boot> go 0x20008040
+
+    4. You will almost certainly need to adapt this configuration to
        work in your network environment.  I did all testing with a
        single 10.0.0.xx network and a 4+1 port switch:
 
@@ -2915,7 +2925,8 @@ Configurations
        - Target GMAC IP: 10.0.0.2
        - Target EMAC IP: 10.0.0.3
 
-       Host, EMAC, and GMAC were all connected using a switch.
+       Host PC, EMAC, and GMAC were all connected using an Ethernet
+       switch to the same 255.255.255.0 network.
 
     STATUS:
 

net/netdev/netdev_findbyaddr.c

@@ -184,8 +184,7 @@ FAR struct net_driver_s *netdev_findbyaddr(const net_ipaddr_t ripaddr)
         }
 #else
       /* If there is only a single, registered network interface, then the
-       * decision is pretty easy.  Use that device and its default router
-       * address.
+       * decision is pretty easy.
        */
 
       return g_netdevices;