irqchip/sunxi-nmi: Reorder sunxi_sc_nmi_reg_offs' in ascending order

This is a pure code move to reorder the various sunxi_sc_nmi_reg_offs'
by family and alphabetical order. No functionality changes.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>