fixed 1ecbbc65 from https://gitee.com/chneg-jinsong/startup_init_lite/pulls/1332

修改productType参数获取
Signed-off-by: Nchengjinsong2 <chengjinsong2@huawei.com>

interfaces/innerkits/syspara/param_wrapper.cpp

@@ -163,7 +163,7 @@ std::string GetDeviceType(void)
         {"fitnessWatch", "liteWearable"},
     };
     static const char *productType = nullptr;
-    const char *type = GetProperty("const.build.devicetype", &productType);
+    const char *type = GetProperty("const.product.devicetype", &productType);
     if (type == nullptr) {
         type = GetProperty("const.build.characteristics", &productType);
     }

interfaces/innerkits/syspara/parameter.c

@@ -94,7 +94,7 @@ int SetParameter(const char *key, const char *value)
 const char *GetDeviceType(void)
 {
     static const char *productType = NULL;
-    const char *deviceType = GetProperty("const.build.devicetype", &productType);
+    const char *deviceType = GetProperty("const.product.devicetype", &productType);
     if (deviceType != NULL) {
         return deviceType;
     }