Update RTOSDemo Debug Renode.launch (#1261)

SoftConsole failed to execute MI command to load the RTOSDebug.elf built in this project. Since the debugger couldn't find  address `0xe000ed00` defined in ARM processor. 

We need to set `$target_riscv` to 1 so that the gdb can be initialized correctly.

FreeRTOS/Demo/RISC-V_Renode_Emulator_SoftConsole/RTOSDemo Debug Renode.launch

@@ -10,7 +10,7 @@
     <booleanAttribute key="ilg.gnumcueclipse.debug.gdbjtag.openocd.doStartGdbServer" value="false"/>
     <booleanAttribute key="ilg.gnumcueclipse.debug.gdbjtag.openocd.enableSemihosting" value="false"/>
     <stringAttribute key="ilg.gnumcueclipse.debug.gdbjtag.openocd.firstResetType" value="init"/>
-    <stringAttribute key="ilg.gnumcueclipse.debug.gdbjtag.openocd.gdbClientOtherCommands" value="set mem inaccessible-by-default off&#13;&#10;set arch riscv:rv32"/>
+    <stringAttribute key="ilg.gnumcueclipse.debug.gdbjtag.openocd.gdbClientOtherCommands" value="set mem inaccessible-by-default off&#13;&#10;set arch riscv:rv32&#13;&#10;set $target_riscv = 1"/>
     <stringAttribute key="ilg.gnumcueclipse.debug.gdbjtag.openocd.gdbClientOtherOptions" value=""/>
     <stringAttribute key="ilg.gnumcueclipse.debug.gdbjtag.openocd.gdbServerConnectionAddress" value=""/>
     <stringAttribute key="ilg.gnumcueclipse.debug.gdbjtag.openocd.gdbServerExecutable" value="${openocd_path}/${openocd_executable}"/>