Fix comment in tee_ree_fs.c
Fix comment in tee_ree_fs.c

Signed-off-by: Liu Zheng <8b6af60d1147b06aac5a4f7f61e66797c3da8ec9@gmail.com>
Reviewed-by: Jens Wiklander <7706914404370d7502c27a0eff493dcf491feb51@linaro.org>

pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os