ARM: dts: qcom: fix memory and mdio nodes naming for RB3011

ARM: dts: qcom: fix memory and mdio nodes naming for RB3011

BugLink: https://bugs.launchpad.net/bugs/1952579
[ Upstream commit 14a1f6c9d8017ffbf388e82e1a1f023196d98612 ]

Fixes warnings regarding to memory and mdio nodes and
apply new naming following dt-schema.

Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211020214741.261509-1-david@ixit.cz
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>