irqchip/ingenic: Add support for TCU of X1000.

Enable TCU support for Ingenic X1000, which can be supported by
the existing driver.

Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1584456160-40060-3-git-send-email-zhouyanjie@wanyeetech.com