cmd/host: add missing \n in help text

Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>

cmd/host.c

@@ -181,7 +181,7 @@ U_BOOT_CMD(
 	"host ls hostfs - <filename>                    - list files on host\n"
 	"host save hostfs - <addr> <filename> <bytes> [<offset>] - "
 		"save a file to host\n"
-	"host size hostfs - <filename> - determine size of file on host"
+	"host size hostfs - <filename> - determine size of file on host\n"
 	"host bind <dev> [<filename>] - bind \"host\" device to file\n"
 	"host info [<dev>]            - show device binding & info\n"
 	"host dev [<dev>] - Set or retrieve the current host device\n"