of: base: add chosen node if it does not exist when adding initrd
If the chosen node does not exist, of_add_initrd fails to pass the
initrd to the kernel. Instead it should create the chosen node, just
like of_fixup_bootargs does.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>