riscv: defconfig: enable SOPHGO SoC

Enable SOPHGO SoC config in defconfig to allow the default
upstream kernel to boot on Milk-V Pioneer board.
Acked-by: Chao Wei <chao.wei@sophgo.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
[conor: fix the ordering]
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

arch/riscv/configs/defconfig

@@ -27,10 +27,11 @@ CONFIG_EXPERT=y
 CONFIG_PROFILING=y
 CONFIG_SOC_MICROCHIP_POLARFIRE=y
 CONFIG_ARCH_RENESAS=y
-CONFIG_ARCH_THEAD=y
 CONFIG_SOC_SIFIVE=y
+CONFIG_ARCH_SOPHGO=y
 CONFIG_SOC_STARFIVE=y
 CONFIG_ARCH_SUNXI=y
+CONFIG_ARCH_THEAD=y
 CONFIG_SOC_VIRT=y
 CONFIG_SMP=y
 CONFIG_HOTPLUG_CPU=y