ibm: tacoma: Fix I2C hwmon conf files paths

The AST2600 device tree paths for the I2C buses are different than on
the AST2500, so add a new set of hwmon conf files for the tacoma system
that are the same as witherspoon but just in a different directory.

Stopped doing CHIPS_append in the recipe since witherspoon-tacoma
inherits from witherspoon it was getting all of witherspoon's conf files
as well.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: If9ac0febc8a77dec35820dc4501bc4a3b2c79db5
diff --git a/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/witherspoon-tacoma/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@200/power-supply@68.conf b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/witherspoon-tacoma/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@200/power-supply@68.conf
new file mode 100644
index 0000000..e463b51
--- /dev/null
+++ b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/witherspoon-tacoma/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@200/power-supply@68.conf
@@ -0,0 +1,23 @@
+LABEL_in1="ps1_input_voltage"
+WARNHI_in1="290000"
+WARNLO_in1="200000"
+CRITHI_in1="300000"
+CRITLO_in1="180000"
+
+LABEL_in2="ps1_output_voltage"
+WARNHI_in2="12700"
+WARNLO_in2="0"
+CRITHI_in2="13000"
+CRITLO_in2="0"
+
+LABEL_curr1="ps1_output_current"
+WARNHI_curr1="170000"
+WARNLO_curr1="0"
+CRITHI_curr1="180000"
+CRITLO_curr1="0"
+
+LABEL_power1="ps1_input_power"
+WARNHI_power1="2350000000"
+WARNLO_power1="0"
+CRITHI_power1="2500000000"
+CRITLO_power1="0"