SPM: Add a log level to support output ERROR log

Add a log level TFM_SPM_LOG_ERROR to just enable the SPMLOG_ERRMSGVAL
and SPMLOG_ERRMSG.

Change-Id: I16de565f8059a80c197b94bf82f8020530ccbcac
Signed-off-by: Shawn Shan <Shawn.Shan@arm.com>
2 files changed