ARM: dts: uniphier: Move interrupt-parent property to each child node in uniphier-support-card

The dtschema warning:
  uniphier-ld11-ref.dt.yaml: system-bus@58c00000: 'interrupt-parent' does not
  match any of the regexes: '^.*@[1-5],[1-9a-f][0-9a-f]+$', 'pinctrl-[0-9]+'

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/20220913042249.4708-9-hayashi.kunihiko@socionext.com

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Signed-off-by: Arnd Bergmann <arnd@arndb.de>