meta-ibm: Remove tacoma-specific options from witherspoon

The KCS device is only used on Tacoma, so move them out to their own
file.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Change-Id: I157a597c753440220b1e92b60191a0c5191e4aec
diff --git a/meta-ibm/recipes-kernel/linux/linux-aspeed/witherspoon.cfg b/meta-ibm/recipes-kernel/linux/linux-aspeed/witherspoon.cfg
index 903ae72..d0d1c6f 100644
--- a/meta-ibm/recipes-kernel/linux/linux-aspeed/witherspoon.cfg
+++ b/meta-ibm/recipes-kernel/linux/linux-aspeed/witherspoon.cfg
@@ -6,13 +6,13 @@
 CONFIG_RTC_DRV_RV8803=y
 CONFIG_IIO=y
 CONFIG_BMP280=y
-CONFIG_IPMI_KCS_BMC=y
-CONFIG_IPMI_KCS_BMC_CDEV_RAW=y
-CONFIG_ASPEED_KCS_IPMI_BMC=y
 CONFIG_MAGIC_SYSRQ=y
 
 # CONFIG_BROADCOM_PHY is not set
 # CONFIG_REALTEK_PHY is not set
+# CONFIG_IPMI_KCS_BMC is not set
+# CONFIG_IPMI_KCS_BMC_CDEV_RAW is not set
+# CONFIG_ASPEED_KCS_IPMI_BMC is not set
 # CONFIG_W1 is not set
 # CONFIG_W1_MASTER_GPIO is not set
 # CONFIG_W1_SLAVE_THERM is not set