riscv/k230: revise canmv230:nsh

This revises canmv230:nsh to support both k230 and k230d devices.

Signed-off-by: Yanfeng Liu <[email protected]>

boards/risc-v/k230/canmv230/configs/nsh/defconfig

@@ -49,7 +49,7 @@ CONFIG_NSH_FILEIOSIZE=512
 CONFIG_NSH_READLINE=y
 CONFIG_PATH_INITIAL="/system/bin"
 CONFIG_RAM_SIZE=16777216
-CONFIG_RAM_START=0x8000000
+CONFIG_RAM_START=0x6000000
 CONFIG_RAW_BINARY=y
 CONFIG_READLINE_CMD_HISTORY=y
 CONFIG_RR_INTERVAL=200