When a memory bank is already registered, return an error code
instead of throwing a bug. This can happen if a board has registered
a memory bank and the same bank is then probed from the devicetree.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
On arm we have the concept of memory banks which can
be registered and iterated over. This is useful for
other architectures aswell, so add some generic infrastructure
for this.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer