Command usage cleanup

Remove command name from all command "usage" fields and update
common/command.c to display "name - usage" instead of
just "usage". Also remove newlines from command usage fields.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

common/cmd_boot.c

@@ -64,7 +64,7 @@ int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 
 U_BOOT_CMD(
 	go, CONFIG_SYS_MAXARGS, 1,	do_go,
-	"go      - start application at address 'addr'\n",
+	"start application at address 'addr'",
 	"addr [arg ...]\n    - start application at address 'addr'\n"
 	"      passing 'arg' as arguments\n"
 );
@@ -73,6 +73,6 @@ extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
 
 U_BOOT_CMD(
 	reset, 1, 0,	do_reset,
-	"reset   - Perform RESET of the CPU\n",
+	"Perform RESET of the CPU",
 	NULL
 );