Enable MCU driver for SG2042 to provide thermal and reboot support.

Signed-off-by: Inochi Amaoto <redacted>
Tested-by: Chen Wang <redacted>
Reviewed-by: Chen Wang <redacted>
---
  arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts | 2 +-
  arch/riscv/configs/defconfig                        | 1 +
  2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
index 8b8fdf6243d4..76375e25a495 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts

@@ -67,7 +67,7 @@ soc_active3: soc-active3 {
  				};
  
  				soc_hot: soc-hot {
-					temperature = <85000>;
+					temperature = <80000>;
  					hysteresis = <5000>;
  					type = "hot";
  				};

diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index 0d678325444f..a0f346301df6 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig

@@ -170,6 +170,7 @@ CONFIG_SPI_SUN6I=y
  CONFIG_GPIO_SIFIVE=y
  CONFIG_POWER_RESET_GPIO_RESTART=y
  CONFIG_SENSORS_SFCTEMP=m
+CONFIG_SENSORS_SG2042_MCU=y
  CONFIG_CPU_THERMAL=y
  CONFIG_DEVFREQ_THERMAL=y
  CONFIG_RZG2L_THERMAL=y