hw/riscv: microchip_pfsoc: Rework documentation

Mention that running the HSS no longer works.  Document the changed boot
options.  Reorder documentation blocks.  Update URLs.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20250319061342.26435-7-sebastian.huber@embedded-brains.de>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
1 file changed