Atmel M90E32AS Energy Metering IC. Found in CircuitSetup 2chan and 6chan energy meterss (#629)

* Atmel M90E32AS Energy Metering IC. Found in CircuitSetup 2can and 6chan energy meters

* fix style bugs

* Update esphome/components/atm90e32/atm90e32.cpp

Co-Authored-By: Otto Winter <otto@otto-winter.com>

* Properly put atm90e32_reg in namespace

* Use phase grouped config like ina3221

* Log why the component is marked failed, did not read back our register value

* 32bit register reads are 2s compliment

* Fix atm90e32 option name in test

* clang-format changes from travis-ci

* use new protected method names

* Whitespace changes to please Travis

* Update esphome/components/atm90e32/atm90e32.cpp

Co-Authored-By: Otto Winter <otto@otto-winter.com>

* Fix up type change for val_h/val_l

* Remove conditions around values with defaults

* Rename constants to match their value

* Remove 2's complement check


Co-authored-by: Andrew Thompson <andrew@whosonlocation.com>
Co-authored-by: Otto Winter <otto@otto-winter.com>

tests/test1.yaml

@@ -244,6 +244,35 @@ sensor:
     state_topic: hi/me
     retain: false
     availability:
+  - platform: atm90e32
+    cs_pin: 5
+    phase_a:
+      voltage:
+        name: "EMON Line Voltage A"
+      current:
+        name: "EMON CT1 Current"
+      power:
+        name: "EMON Active Power CT1"
+      gain_voltage: 47660
+      gain_ct: 12577
+    phase_b:
+      current:
+        name: "EMON CT2 Current"
+      power:
+        name: "EMON Active Power CT2"
+      gain_voltage: 47660
+      gain_ct: 12577
+    phase_c:
+      current:
+        name: "EMON CT3 Current"
+      power:
+        name: "EMON Active Power CT3"
+      gain_voltage: 47660
+      gain_ct: 12577
+    frequency:
+      name: "EMON Line Frequency"
+    line_frequency: 50Hz
+    gain_pga: 2X
   - platform: bh1750
     name: "Living Room Brightness 3"
     internal: true