arm64: defconfig: enable RK808 components

Many rockchip based arm64 boards use RK808 as PMIC, so
enabe it here let the board bootup normally.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
[added rk808-rtc as module and rk808-clk output built in]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/configs/defconfig

@@ -279,6 +279,7 @@ CONFIG_S3C2410_WATCHDOG=y
 CONFIG_MESON_GXBB_WATCHDOG=m
 CONFIG_MESON_WATCHDOG=m
 CONFIG_MFD_MAX77620=y
+CONFIG_MFD_RK808=y
 CONFIG_MFD_SPMI_PMIC=y
 CONFIG_MFD_SEC_CORE=y
 CONFIG_MFD_HI655X_PMIC=y
@@ -292,6 +293,7 @@ CONFIG_REGULATOR_MAX77620=y
 CONFIG_REGULATOR_PWM=y
 CONFIG_REGULATOR_QCOM_SMD_RPM=y
 CONFIG_REGULATOR_QCOM_SPMI=y
+CONFIG_REGULATOR_RK808=y
 CONFIG_REGULATOR_S2MPS11=y
 CONFIG_DRM=m
 CONFIG_DRM_NOUVEAU=m
@@ -369,6 +371,7 @@ CONFIG_RTC_DRV_DS3232=y
 CONFIG_RTC_DRV_EFI=y
 CONFIG_RTC_DRV_PL031=y
 CONFIG_RTC_DRV_SUN6I=y
+CONFIG_RTC_DRV_RK808=m
 CONFIG_RTC_DRV_TEGRA=y
 CONFIG_RTC_DRV_XGENE=y
 CONFIG_RTC_DRV_S3C=y
@@ -389,6 +392,7 @@ CONFIG_XEN_GRANT_DEV_ALLOC=y
 CONFIG_COMMON_CLK_SCPI=y
 CONFIG_COMMON_CLK_CS2000_CP=y
 CONFIG_COMMON_CLK_S2MPS11=y
+CONFIG_COMMON_CLK_RK808=y
 CONFIG_CLK_QORIQ=y
 CONFIG_COMMON_CLK_QCOM=y
 CONFIG_MSM_GCC_8916=y