Fix compile error with 64-bit TA dev kit
Fix compile error with 64-bit TA dev kit

$ make PLATFORM=hikey CFG_TEE_TA_LOG_LEVEL=2 CFG_ARM64_core=y \
  CROSS_COMPILE=arm-linux-gnueabihf- \
  CROSS_COMPILE_core=aarch64-linux-gnu- \
  CROSS_COMPILE_ta_arm64=aarch64-linux-gnu-

lib/libutee/tee_user_mem.c: In function ‘tee_user_mem_status’:
lib/libutee/tee_user_mem.c:508:3: error: format ‘%d’ expects argument of type ‘int’, but argument 6 has type ‘size_t’ [-Werror=format=]
   IMSG("Size:\t[%d]", global_stats.size);
   ^

Signed-off-by: Jerome Forissier <ced78d268b4c9a0a20a59a9feeebd2ad90da03d3@linaro.org>
Reviewed-by: Pascal Brand <0b55292d2562685bad4ce52d64f802e8f1cd299e@linaro.org>
Reviewed-by: Jens Wiklander <7706914404370d7502c27a0eff493dcf491feb51@linaro.org>

pascal-brand-st-dev/optee_os,cedric-chaumont-st-dev/optee_os,matt2048/optee_os,Microsoft/optee_os,pascal-brand-st-dev/optee_os,Microsoft/optee_os,matt2048/optee_os,cedric-chaumont-st-dev/optee_os,cedric-chaumont-st-dev/optee_os,pascal-brand-st-dev/optee_os,matt2048/optee_os,Microsoft/optee_os,Microsoft/optee_os,Microsoft/optee_os,matt2048/optee_os,cedric-chaumont-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os