ARM: dts: Fix am335x and dm814x scm syscon to probe children

[ Upstream commit 1aa09df0854efe16b7a80358a18f0a0bebafd246 ]

Without these changes children of the scn syscon
won't probe.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>