TA: export CFG_TEE_TA_LOG_LEVEL to dev-kit
TA: export CFG_TEE_TA_LOG_LEVEL to dev-kit

Exports CFG_TEE_TA_LOG_LEVEL to TA dev-kit. It can still be overridden
when compiling the TA, but it makes sense to default to the value used
when compiling the dev-kit.

Acked-by: Jerome Forissier <ced78d268b4c9a0a20a59a9feeebd2ad90da03d3@linaro.org>
Signed-off-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