Replace use of ttyAM0 with ttyAMA0 as default serial console.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
 #define        CONFIG_SETUP_MEMORY_TAGS
 #define        CONFIG_BOOTDELAY        3
 #define        CONFIG_BOOTFILE         "uImage"
-#define        CONFIG_BOOTARGS         "console=ttyAM0,115200n8 "
+#define        CONFIG_BOOTARGS         "console=ttyAMA0,115200n8 "
 #define        CONFIG_BOOTCOMMAND      "run bootcmd_net"
 #define        CONFIG_LOADADDR         0x42000000
 #define        CONFIG_SYS_LOAD_ADDR    CONFIG_LOADADDR