dt-bindings: reset: Add StarFive JH7100 reset definitions

Add all resets for the StarFive JH7100 reset controller.

Based on work by Ahmad Fatoum for Barebox, with "JH7100_" prefixes added
to all definitions.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>