boards: arm64: qemu_kvm_arm64: Convert to v2

Converts the board to hwmv2

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

boards/v2/qemu/qemu_kvm_arm64/Kconfig.defconfig

@@ -6,7 +6,4 @@ if BOARD_QEMU_KVM_ARM64
 config BUILD_OUTPUT_BIN
 	default y
 
-config BOARD
-	default "qemu_kvm_arm64"
-
 endif # BOARD_QEMU_KVM_ARM64

boards/v2/qemu/qemu_kvm_arm64/Kconfig.qemu_kvm_arm64

@@ -2,7 +2,6 @@
 # SPDX-License-Identifier: Apache-2.0
 
 config BOARD_QEMU_KVM_ARM64
-	bool "Cortex AArch64 KVM Virt Emulation (QEMU)"
-	depends on SOC_QEMU_VIRT_ARM64
+	select SOC_QEMU_VIRT_ARM64
 	select ARM64
 	select QEMU_TARGET

boards/v2/qemu/qemu_kvm_arm64/board.yml

@@ -0,0 +1,5 @@
+board:
+  name: qemu_kvm_arm64
+  vendor: ARM
+  socs:
+  - name: qemu_virt_arm64

boards/v2/qemu/qemu_kvm_arm64/qemu_kvm_arm64_defconfig

@@ -1,5 +1,3 @@
-CONFIG_SOC_QEMU_VIRT_ARM64=y
-CONFIG_BOARD_QEMU_KVM_ARM64=y
 CONFIG_ARM_ARCH_TIMER=y
 CONFIG_TIMER_READS_ITS_FREQUENCY_AT_RUNTIME=y
 CONFIG_QEMU_ICOUNT=n