configs: Move a sensor from Nisqually to Blyth

One of the TMP275 temp sensors I had originally put on the Nisqually
planar is actually on the Blyth operator panel FRU.  Create the Blyth
JSON file and move the sensor definition into it.

Tested:  I see the proper D-Bus objects on the Rainier system:
/xyz/openbmc_project/inventory/system/board/Blyth_Panel
/xyz/openbmc_project/inventory/system/board/Blyth_Panel/Ambient_0_Temp

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I873a16c8ba97e15770c628de07d8495c5af08876
diff --git a/meson.build b/meson.build
index ffe3d09..3f70151 100644
--- a/meson.build
+++ b/meson.build
@@ -74,6 +74,7 @@
     'A2UL16RISER.json',
     'A2UX8X4RISER.json',
     'ACBELL_RICA_PSU.json',
+    'Blyth.json',
     'AHW1UM2RISER.json',
     'ASPOWER_U1A-D10550_PSU.json',
     'ASPOWER_U1A-D10800_PSU.json',