mx6memcal: spl: Also take i.MX6ULL into account

i.MX6ULL also does not support 64-bit DDR bus, so add it to the
check logic.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>

board/freescale/mx6memcal/spl.c

@@ -419,6 +419,7 @@ void board_init_f(ulong dummy)
 	if (sysinfo.dsize != 1) {
 		if (is_cpu_type(MXC_CPU_MX6SX) ||
 		    is_cpu_type(MXC_CPU_MX6UL) ||
+		    is_cpu_type(MXC_CPU_MX6ULL) ||
 		    is_cpu_type(MXC_CPU_MX6SL)) {
 			printf("cpu type 0x%x doesn't support 64-bit bus\n",
 			       get_cpu_type());