feat(ci): build tfa and tftf in the job's workspace directory

This is useful when running locally - avoid polluting the source
directory with artefacts and allows more than 1 job to be built at the
same time.

Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: I8e8e0ff4741d5454706fd96a55936d56c3a6d22e
diff --git a/tf_config/fvp-spm-report-max-ctx-mem-use b/tf_config/fvp-spm-report-max-ctx-mem-use
index 315d4f8..136807b 100644
--- a/tf_config/fvp-spm-report-max-ctx-mem-use
+++ b/tf_config/fvp-spm-report-max-ctx-mem-use
@@ -15,4 +15,4 @@
 PLATFORM_REPORT_CTX_MEM_USE=1
 SPD=spmd
 SPMD_SPM_AT_SEL2=1
-SP_LAYOUT_FILE=${tftf_root}/build/fvp/${bin_mode}/sp_layout.json
+SP_LAYOUT_FILE=${archive}/${mode}build/tftf/fvp/${bin_mode}/sp_layout.json