arm64: dts: allwinner: a64: Add SID node

The A64 have a SID controller which consist of EFUSE (starting at 0x200)
and three registers to read/write some of the protected efuses.

Signed-off-by: Emmanuel Vadot <manu@freebsd.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>