uboot-phytec

board: ls1088a: fix fsl-mc search path

Path for fsl-mc node in kernel device-tree is /soc/fsl-mc whereas
in u-boot it is /fsl-mc.

Fix the incorrect search path to fix following error:
fdt_fixup_board_enet: ERROR: fsl-mc node not found in device tree
(error -1)

Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>