hw/riscv: Sort machines Kconfig options in alphabetical order

SHAKTI_C machine Kconfig option was inserted in disorder. Fix it.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Message-Id: <20221211030829.802437-4-bmeng@tinylab.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

hw/riscv/Kconfig

@@ -4,6 +4,8 @@ config RISCV_NUMA
 config IBEX
     bool
 
+# RISC-V machines in alphabetical order
+
 config MICROCHIP_PFSOC
     bool
     select CADENCE_SDHCI
@@ -22,13 +24,6 @@ config OPENTITAN
     select SIFIVE_PLIC
     select UNIMP
 
-config SHAKTI_C
-    bool
-    select UNIMP
-    select SHAKTI_UART
-    select RISCV_ACLINT
-    select SIFIVE_PLIC
-
 config RISCV_VIRT
     bool
     imply PCI_DEVICES
@@ -50,6 +45,13 @@ config RISCV_VIRT
     select FW_CFG_DMA
     select PLATFORM_BUS
 
+config SHAKTI_C
+    bool
+    select RISCV_ACLINT
+    select SHAKTI_UART
+    select SIFIVE_PLIC
+    select UNIMP
+
 config SIFIVE_E
     bool
     select RISCV_ACLINT