ARM: dts: stm32: Fix partition node name for stm32mp15xx-dhcom-u-boot

Fix flash@0 partition node name with correct offset.

Fixes: 90f992e6a58c ("arm: dts: stm32: Add partitions in flash0 and nand
node for stm32mp15xx-dhcom/dhcor")

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
1 file changed