ARM: dts: Add devicetree for Supermicro X9SCi-LN4F based on WPCM450

The Supermicro X9SCi-LN4F is a server mainboard featuring the WPCM450
BMC. This patch adds a minimal devicetree for Linux running on the BMC.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210406120921.2484986-10-j.neuschaefer@gmx.net


Signed-off-by: Joel Stanley <joel@jms.id.au>