docs(touch): update touch sensor docs for the new driver

docs/en/migration-guides/release-5.x/5.5/index.rst

@@ -7,3 +7,4 @@ Migration from 5.4 to 5.5
     :maxdepth: 1
 
     system
+    peripherals

docs/en/migration-guides/release-5.x/5.5/peripherals.rst

@@ -0,0 +1,27 @@
+Peripherals
+===========
+
+:link_to_translation:`zh_CN:[中文]`
+
+.. only:: SOC_TOUCH_SENSOR_SUPPORTED
+
+    Touch Sensor
+    ------------
+
+    The touch sensor driver has been redesigned into :doc:`Capacitive Touch Sensor <../../../api-reference/peripherals/cap_touch_sens>`.
+
+    - The new driver is in ``esp_driver_touch_sens`` component and the include path is ``driver/touch_sens.h``.
+    - The legacy driver is still available in the previous include path ``driver/touch_sensor.h``.
+
+    Although it is recommended to use the new driver APIs, the legacy driver is still available in the previous include path ``driver/touch_sensor.h``. However, by default, including ``driver/touch_sensor.h`` triggers the build warning below. The warning can be suppressed by the Kconfig option :ref:`CONFIG_TOUCH_SUPPRESS_DEPRECATE_WARN`.
+
+    The major changes are listed as follows:
+
+    Major Changes
+    ^^^^^^^^^^^^^
+
+    - Now the touch sensor APIs based on different hardware version are integrated into one API set. And each sub-feature is configurable via its own individual API.
+    - Almost all hardware configurations are public to provide enough flexibility, meanwhile the driver also offers some default configurations to save your time on figuring out a basic workable configuration.
+    - The new touch driver implemented Finite-State Machine (FSM) to ensure a correct touch sensor operation. Please refer to the programming guide :doc:`Capacitive Touch Sensor <../../../api-reference/peripherals/cap_touch_sens>` for more details.
+    - All new APIs are guaranteed to be thread-safe.
+    - Implemented a software filter for the touch sensor V1 (ESP32), and open for customization.