debug: Add support to log to file.
When VIRGL_LOG_FILE gets set, put log into it. This is similar with MESA_LOG_FILE.
Signed-off-by: Lepton Wu lepton@chromium.org
When VIRGL_LOG_FILE gets set, put log into it. This is similar with MESA_LOG_FILE.
Signed-off-by: Lepton Wu lepton@chromium.org