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/bmp280@77.conf b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/witherspoon-tacoma/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@200/bmp280@77.conf
new file mode 100644
index 0000000..cdf8b47
--- /dev/null
+++ b/meta-witherspoon/recipes-phosphor/sensors/phosphor-hwmon/witherspoon-tacoma/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@200/bmp280@77.conf
@@ -0,0 +1,6 @@
+LABEL_temp1 = "ambient"
+WARNHI_temp1 = "25000"
+WARNLO_temp1 = "0"
+CRITHI_temp1 = "35000"
+CRITLO_temp1 = "0"
+OFFSET_temp1 = "-2000"