reset: sparx5: add LAN969x support
LAN969x uses the same reset configuration as LAN966x, but we need to
allow compiling it when ARCH_LAN969X is selected.
A fallback compatible to LAN966x will be used.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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