Fix logger usage with bitwise operator

Fix logger usage with bitwise operator

DEBUG, WARN logs are displayed when debug mode
- usage -
INFO(VIST) << "Info message" << 1;
DEBUG(VIST) << "Debug message" << 2 << 'a';
WARN(VIST) << "Warning message" << 3 << 'b' << true;
ERROR(VIST) << "Error message" << 4 << 'c' << false << 0.0f;

Signed-off-by: Sangwan Kwon <sangwan.kwon@samsung.com>