arm64: defconfig: enable support hi6421v530 PMIC

Enable configs for hi6421v530 mfd and regulator driver
 + CONFIG_MFD_HI6421_PMIC=y
 + CONFIG_REGULATOR_HI6421V530=y

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index e2f4375..17e30b9 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -318,6 +318,7 @@
 CONFIG_MFD_CROS_EC_I2C=y
 CONFIG_MFD_CROS_EC_SPI=y
 CONFIG_MFD_EXYNOS_LPASS=m
+CONFIG_MFD_HI6421_PMIC=y
 CONFIG_MFD_HI655X_PMIC=y
 CONFIG_MFD_MAX77620=y
 CONFIG_MFD_SPMI_PMIC=y
@@ -326,6 +327,7 @@
 CONFIG_REGULATOR_FAN53555=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_REGULATOR_GPIO=y
+CONFIG_REGULATOR_HI6421V530=y
 CONFIG_REGULATOR_HI655X=y
 CONFIG_REGULATOR_MAX77620=y
 CONFIG_REGULATOR_PWM=y