mpc512x: pdm360ng: drop not needed memory node fixup

ft_cpu_setup() already does memory node fixup, no need
to do it again.

Signed-off-by: Anatolij Gustschin <agust@denx.de>

board/pdm360ng/pdm360ng.c

@@ -500,7 +500,6 @@ void ft_board_setup(void *blob, bd_t *bd)
 	int rc, i = 0;
 
 	ft_cpu_setup(blob, bd);
-	fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
 	fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 #endif