In new kernel version from 5.16, smem node can be declared directly in
the reserved-space node. Upstream ipq806x (and to-be-merged) ipq807x
allign to this new implementation. Backport this patch to kernel 5.15 to
fix support for smem parser for ipq806x target.
Fixes: 88bf652525 ("ipq806x: 5.15: replace dtsi patches with upstream version")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
