bootm: Fix help message's sub-command ordering

The help message for the 'bootm' command listed the 'cmdline' and 'bdt'
sub-commands in the wrong order which resulted in the error below when
following the 'help' command's instructions:

  "Trying to execute a command out of order"

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

common/cmd_bootm.c

@@ -453,8 +453,8 @@ cmd_tbl_t cmd_bootm_sub[] = {
 #ifdef CONFIG_OF_LIBFDT
 	U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)BOOTM_STATE_FDT, "", ""),
 #endif
-	U_BOOT_CMD_MKENT(bdt, 0, 1, (void *)BOOTM_STATE_OS_BD_T, "", ""),
 	U_BOOT_CMD_MKENT(cmdline, 0, 1, (void *)BOOTM_STATE_OS_CMDLINE, "", ""),
+	U_BOOT_CMD_MKENT(bdt, 0, 1, (void *)BOOTM_STATE_OS_BD_T, "", ""),
 	U_BOOT_CMD_MKENT(prep, 0, 1, (void *)BOOTM_STATE_OS_PREP, "", ""),
 	U_BOOT_CMD_MKENT(go, 0, 1, (void *)BOOTM_STATE_OS_GO, "", ""),
 };
@@ -1000,8 +1000,8 @@ U_BOOT_CMD(
 #if defined(CONFIG_OF_LIBFDT)
 	"\tfdt     - relocate flat device tree\n"
 #endif
-	"\tbdt     - OS specific bd_t processing\n"
 	"\tcmdline - OS specific command line processing/setup\n"
+	"\tbdt     - OS specific bd_t processing\n"
 	"\tprep    - OS specific prep before relocation or go\n"
 	"\tgo      - start OS"
 );