ARM: dts: BCM5301X: MR32: remove partition index numbers

removes the partition indexes in the node names under.
This brings the device tree source in line with others.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Link: https://lore.kernel.org/r/627f57d568030a56499361790524b4d4f3381619.1686238550.git.chunkeey@gmail.com


Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>