boards: riscv: mpfs_icicle: Convert to v2

Converts the board to hwmv2

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>

boards/boards_legacy/riscv/mpfs_icicle/Kconfig.defconfig

@@ -1,6 +0,0 @@
-# Copyright (c) 2020-2021 Microchip Technology Inc
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD
-	default "mpfs_icicle"
-	depends on BOARD_MPFS_ICICLE

boards/microchip/mpfs_icicle/Kconfig

@@ -2,8 +2,6 @@
 # SPDX-License-Identifier: Apache-2.0
 
 config BOARD_MPFS_ICICLE
-	bool "Microchip PolarFire SoC ICICLE kit"
-	depends on SOC_POLARFIRE
 	select 64BIT
 	select SCHED_IPI_SUPPORTED
 	select CPU_HAS_FPU_DOUBLE_PRECISION

boards/microchip/mpfs_icicle/Kconfig.mpfs_icicle

@@ -0,0 +1,5 @@
+# Copyright (c) 2021-2022 Microchip Technology Inc
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_MPFS_ICICLE
+	select SOC_POLARFIRE

boards/microchip/mpfs_icicle/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: mpfs_icicle
+  vendor: Microchip
+  socs:
+  - name: polarfire

boards/microchip/mpfs_icicle/mpfs_icicle_defconfig

@@ -1,12 +1,9 @@
 # Copyright (c) 2020-2021 Microchip Technology Inc
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_POLARFIRE=y
-CONFIG_SOC_POLARFIRE=y
 CONFIG_MPFS_HAL=n
 CONFIG_BASE64=y
 CONFIG_INCLUDE_RESET_VECTOR=y
-CONFIG_BOARD_MPFS_ICICLE=y
 CONFIG_CONSOLE=y
 CONFIG_SERIAL=y
 CONFIG_UART_CONSOLE=y