cosmetic: print amount of NAND flash aligned with the other values such as

DRAM

lib_arm/board.c

@@ -297,7 +297,7 @@ void start_armboot (void)
 	mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
 
 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
-	puts ("NAND:");
+	puts ("NAND:  ");
 	nand_init();		/* go init the NAND */
 #endif
 

lib_m68k/board.c

@@ -631,7 +631,7 @@ void board_init_r (gd_t *id, ulong dest_addr)
 
 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 	WATCHDOG_RESET ();
-	puts ("NAND:");
+	puts ("NAND:  ");
 	nand_init();		/* go init the NAND */
 #endif