fixes bsp/qemu-virt64-riscv/smart-env.bat for windows

Author: lygstate

bsp/qemu-virt64-riscv/smart-env.bat

@@ -1,24 +1,13 @@
 
-@set def_arch=arm
+@set def_arch=riscv64
 
-@if not "%1"=="" (
-    @set def_arch=%1
-)
+pushd %RTT_ENV_URL%\..\..
+set RTT_ENV_ROOT=%cd%
+popd
 
-@if %def_arch%==arm (
-    @set RTT_CC=gcc
-    @set RTT_EXEC_PATH=%cd%\tools\gnu_gcc\arm-linux-musleabi_for_i686-w64-mingw32\bin
-    @set RTT_CC_PREFIX=arm-linux-musleabi-
-    @copy configs\def_config_arm .config
-) else if %def_arch%==riscv64 (
-    @set RTT_CC=gcc
-    @set RTT_EXEC_PATH=E:\workspace\rt-smart\userapps\tools\gnu_gcc\riscv64-linux-musleabi_for_i686-w64-mingw32\bin
-    @set RTT_CC_PREFIX=riscv64-unknown-linux-musl-
-    @copy configs\def_config_riscv64 .config
-) else (
-    @echo "ERROR:supported_arch=arm riscv64!"
-    @goto EXIT
-)
+@set RTT_CC=gcc
+@set RTT_EXEC_PATH=%RTT_ENV_ROOT%\tools\gnu_gcc\riscv64-linux-musleabi_for_i686-w64-mingw32\bin
+@set RTT_CC_PREFIX=riscv64-linux-musleabi-
 
 @set PATH=%RTT_EXEC_PATH%;%PATH%