boards: Convert google_twinkie_v2 to HWM v2

Port the board to HWMv2.

Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>

boards/boards_legacy/arm/google_twinkie_v2/Kconfig.defconfig

@@ -1,9 +0,0 @@
-# Copyright 2023 The ChromiumOS Authors
-# SPDX-License-Identifier: Apache-2.0
-
-if BOARD_GOOGLE_TWINKIE_V2
-
-config BOARD
-	default "google_twinkie_v2"
-
-endif # BOARD_GOOGLE_TWINKIE_V2

boards/google/google_twinkie_v2/Kconfig.google_twinkie_v2

@@ -2,5 +2,4 @@
 # SPDX-License-Identifier: Apache-2.0
 
 config BOARD_GOOGLE_TWINKIE_V2
-	bool "Google Twinkie V2 Board"
-	depends on SOC_STM32G0B1XX
+	select SOC_STM32G0B1XX

boards/google/google_twinkie_v2/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: google_twinkie_v2
+  vendor: google
+  socs:
+    - name: stm32g0b1xx

boards/google/google_twinkie_v2/google_twinkie_v2_defconfig

@@ -2,9 +2,6 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32G0X=y
-CONFIG_SOC_STM32G0B1XX=y
-
 # GPIO Controller
 CONFIG_GPIO=y