Move CONF_PLATFORM_VERSION to global const.py (#6629)

* remove duplicated definition

* format

esphome/components/esp32/__init__.py

@@ -32,6 +32,7 @@ from esphome.const import (
     TYPE_GIT,
     TYPE_LOCAL,
     __version__,
+    CONF_PLATFORM_VERSION,
 )
 from esphome.core import CORE, HexInt, TimePeriod
 import esphome.config_validation as cv
@@ -365,8 +366,6 @@ def final_validate(config):
     return config
 
 
-CONF_PLATFORM_VERSION = "platform_version"
-
 ARDUINO_FRAMEWORK_SCHEMA = cv.All(
     cv.Schema(
         {

esphome/components/esp8266/__init__.py

@@ -12,6 +12,7 @@ from esphome.const import (
     KEY_TARGET_FRAMEWORK,
     KEY_TARGET_PLATFORM,
     PLATFORM_ESP8266,
+    CONF_PLATFORM_VERSION,
 )
 from esphome.core import CORE, coroutine_with_priority
 import esphome.config_validation as cv
@@ -146,7 +147,6 @@ def _parse_platform_version(value):
         return value
 
 
-CONF_PLATFORM_VERSION = "platform_version"
 ARDUINO_FRAMEWORK_SCHEMA = cv.All(
     cv.Schema(
         {

esphome/components/rp2040/__init__.py

@@ -15,6 +15,7 @@ from esphome.const import (
     KEY_TARGET_FRAMEWORK,
     KEY_TARGET_PLATFORM,
     PLATFORM_RP2040,
+    CONF_PLATFORM_VERSION,
 )
 from esphome.core import CORE, coroutine_with_priority, EsphomeError
 from esphome.helpers import mkdir_p, write_file, copy_file_if_changed
@@ -125,8 +126,6 @@ def _parse_platform_version(value):
         return value
 
 
-CONF_PLATFORM_VERSION = "platform_version"
-
 ARDUINO_FRAMEWORK_SCHEMA = cv.All(
     cv.Schema(
         {

esphome/const.py

@@ -597,6 +597,7 @@ CONF_PIN_D = "pin_d"
 CONF_PINS = "pins"
 CONF_PIXEL_MAPPER = "pixel_mapper"
 CONF_PLATFORM = "platform"
+CONF_PLATFORM_VERSION = "platform_version"
 CONF_PLATFORMIO_OPTIONS = "platformio_options"
 CONF_PM_0_3UM = "pm_0_3um"
 CONF_PM_0_5UM = "pm_0_5um"