meta-fii/meta-kudo: add RTC device configuration

1. add RTC kernel configuration

Signed-off-by: Lancelot Kao <lancelot.kao@fii-usa.com>
Change-Id: I17ddb7479b3064d6b7afdc44235b563e57e833fc
diff --git a/meta-fii/meta-kudo/recipes-kernel/linux/linux-nuvoton/kudo.cfg b/meta-fii/meta-kudo/recipes-kernel/linux/linux-nuvoton/kudo.cfg
index 9755d94..d970cf4 100644
--- a/meta-fii/meta-kudo/recipes-kernel/linux/linux-nuvoton/kudo.cfg
+++ b/meta-fii/meta-kudo/recipes-kernel/linux/linux-nuvoton/kudo.cfg
@@ -79,6 +79,10 @@
 CONFIG_I2C_SLAVE_MQUEUE=y
 CONFIG_IPMB_DEVICE_INTERFACE=y
 
+# RTC device
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_PCF85063=y
+
 #
 # JATG Configuration
 CONFIG_NUVOTON_JTAG=y