forked from Mirrors/opensbi

The A2P doorbell value written to the 32-bit A2P doorbell value must be discoverd from device tree instead of always using the default value 1. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Link: https://lore.kernel.org/r/20250512083827.804151-4-apatel@ventanamicro.com Signed-off-by: Anup Patel <anup@brainfault.org>