Add TMP421 to Palmetto config
diff --git a/meta-palmetto/recipes-kernel/linux/linux-obmc/palmetto.cfg b/meta-palmetto/recipes-kernel/linux/linux-obmc/palmetto.cfg
new file mode 100644
index 0000000..2594dec
--- /dev/null
+++ b/meta-palmetto/recipes-kernel/linux/linux-obmc/palmetto.cfg
@@ -0,0 +1,4 @@
+CONFIG_HWMON=y
+CONFIG_SENSORS_NCT7904=y
+CONFIG_EEPROM_AT24=y
+CONFIG_SENSORS_TMP421=y
diff --git a/meta-palmetto/recipes-kernel/linux/linux-obmc_%.bbappend b/meta-palmetto/recipes-kernel/linux/linux-obmc_%.bbappend
index 2c8056c..e4a4d85 100644
--- a/meta-palmetto/recipes-kernel/linux/linux-obmc_%.bbappend
+++ b/meta-palmetto/recipes-kernel/linux/linux-obmc_%.bbappend
@@ -1,2 +1,2 @@
 FILESEXTRAPATHS_prepend := "${THISDIR}/linux-obmc:"
-SRC_URI += "file://palmetto.dts"
+SRC_URI += "file://palmetto.dts file://palmetto.cfg"