lib: rpmi: Make RPMI drivers as non-experimental

As RPMI v1.0 specification is frozen, disable the
experimental tag for such RPMI drivers.

Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20250618053854.2577299-2-rpathak@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>

lib/utils/cppc/fdt_cppc_rpmi.c

@@ -370,5 +370,4 @@ static const struct fdt_match rpmi_cppc_match[] = {
 const struct fdt_driver fdt_cppc_rpmi = {
 	.match_table = rpmi_cppc_match,
 	.init = rpmi_cppc_cold_init,
-	.experimental = true,
 };