ARM: rockchip: Set name of pmu regmap_config in smp code

We are now allowing to register debugfs without a valid device, and not
having a valid name will end up using "dummy*" to create debugfs dir.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/mach-rockchip/platsmp.c

@@ -208,6 +208,7 @@ static int __init rockchip_smp_prepare_sram(struct device_node *node)
 }
 
 static const struct regmap_config rockchip_pmu_regmap_config = {
+	.name = "rockchip-pmu",
 	.reg_bits = 32,
 	.val_bits = 32,
 	.reg_stride = 4,