Kconfig: rockchip: enable DM_PWM and DM_REGULATOR

Enable DM_PWM and DM_REGULATOR on rockchip SoCs.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1e4830a..382a73f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -928,6 +928,8 @@
 	select DM_SPI
 	select DM_SPI_FLASH
 	select DM_USB if USB
+	select DM_PWM
+	select DM_REGULATOR
 
 config TARGET_THUNDERX_88XX
 	bool "Support ThunderX 88xx"