build/configs/rtl8721csm : Fix compile error in RTK
Enable CONFIG_TESTCASE_DRV in defconfig file to fix build error.
@@ -404,7 +404,7 @@ CONFIG_GPIO=y
# CONFIG_WATCHDOG is not set
# CONFIG_TIMER is not set
# CONFIG_ANALOG is not set
-# CONFIG_TESTCASE_DRV is not set
+CONFIG_TESTCASE_DRV=y
# CONFIG_NETDEVICES is not set
CONFIG_PIPES=y
CONFIG_DEV_PIPE_SIZE=1024
