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/mpxy/fdt_mpxy_rpmi_clock.c

@@ -83,5 +83,4 @@ static const struct fdt_match clock_match[] = {
 const struct fdt_driver fdt_mpxy_rpmi_clock = {
 	.match_table = clock_match,
 	.init = mpxy_rpmi_mbox_init,
-	.experimental = true,
 };

lib/utils/mpxy/fdt_mpxy_rpmi_sysmsi.c

@@ -205,5 +205,4 @@ static const struct fdt_match sysmsi_match[] = {
 const struct fdt_driver fdt_mpxy_rpmi_sysmsi = {
 	.match_table = sysmsi_match,
 	.init = mpxy_rpmi_mbox_init,
-	.experimental = true,
 };