samples: boards: google: group Google board samples

Group all Google board samples in samples/boards/google to
keep samples/boards/ organized by vendor
Added zephyr-code-sample directive to twinkie sample

Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>

MAINTAINERS.yml

@@ -2317,7 +2317,7 @@ Google Platforms:
     - duda-patryk
   files:
     - boards/google/
-    - samples/boards/google_*/
+    - samples/boards/google/
 
 Hash Utilities:
   status: maintained

doc/_scripts/redirects.py

@@ -227,6 +227,7 @@ REDIRECTS = [
     ('samples/boards/esp32/spiram_test/README', 'samples/boards/espressif/spiram_test/README'),
     ('samples/boards/esp32/wifi_apsta_mode/README', 'samples/boards/espressif/wifi_apsta_mode/README'),
     ('samples/boards/esp32/xt_wdt/README', 'samples/boards/espressif/xt_wdt/README'),
+    ('samples/boards/google_twinkie_v2_pda/README', 'samples/boards/google/twinkie_v2/pda/README'),
     ('samples/boards/intel_adsp/code_relocation/README', 'samples/boards/intel/adsp/code_relocation/README'),
     ('samples/boards/mec15xxevb_assy6853/power_management/README', 'samples/boards/microchip/mec15xxevb_assy6853/power_management/README'),
     ('samples/boards/mimxrt1060_evk/system_off/README', 'samples/boards/nxp/mimxrt1060_evk/system_off/README'),

samples/boards/google/twinkie_v2/pda/README.rst

@@ -1,7 +1,8 @@
-.. _google_twinkie_v2_pda:
+.. zephyr:code-sample:: twinkie_v2_pda
+   :name: Power Delivery Analyzer
+   :relevant-api: adc_interface
 
-Twinkie Power Delivery
-######################
+   Implement a basic Power Delivery Analyzer to determine if a USB device is currently charging.
 
 Overview
 ********
@@ -15,7 +16,7 @@ Building and Running
 Build and flash Twinkie as follows:
 
 .. zephyr-app-commands::
-   :zephyr-app: samples/boards/google_twinkie_v2_pda
+   :zephyr-app: samples/boards/google/twinkie_v2/pda
    :board: google_twinkie_v2
    :goals: build flash
    :compact: