CMake: fix NUC472 ARM path

Author: 0xc0170

targets/TARGET_NUVOTON/TARGET_NUC472/CMakeLists.txt

@@ -9,9 +9,9 @@ if(${MBED_TOOLCHAIN} STREQUAL "GCC_ARM")
     endif()
 elseif(${MBED_TOOLCHAIN} STREQUAL "ARM")
     if("NU_XRAM_SUPPORTED" IN_LIST MBED_TARGET_LABELS)
-        set(LINKER_FILE device/TOOLCHAIN_GCC_ARM/TARGET_NU_XRAM_SUPPORTED/NUC472.sct)
+        set(LINKER_FILE device/TOOLCHAIN_ARM_STD/TARGET_NU_XRAM_SUPPORTED/NUC472.sct)
     elseif("NU_XRAM_UNSUPPORTED" IN_LIST MBED_TARGET_LABELS)
-        set(LINKER_FILE device/TOOLCHAIN_GCC_ARM/TARGET_NU_XRAM_UNSUPPORTED/NUC472.sct)
+        set(LINKER_FILE device/TOOLCHAIN_ARM_STD/TARGET_NU_XRAM_UNSUPPORTED/NUC472.sct)
     endif()
 endif()