ci(spm): use SP fragment list with TF-A's SPM

Add the option ARM_BL2_SP_LIST_DTS to include the fragment
for the Trusted Bootloader that relates to the SPs.

This is to automate the process of configuration for
system integrator.

It should resort to SP layout file to speficy the load
address of the SP's package.

Signed-off-by: J-Alves <joao.alves@arm.com>
Change-Id: I3bdd2cfd6fc43cf7f0dbf96ab09d2be5c301fedf
diff --git a/tf_config/fvp-spm b/tf_config/fvp-spm
index 866a144..047fd17 100644
--- a/tf_config/fvp-spm
+++ b/tf_config/fvp-spm
@@ -9,5 +9,6 @@
 ENABLE_FEAT_MTE2=1
 BRANCH_PROTECTION=1
 SP_LAYOUT_FILE=${tftf_root}/build/fvp/${bin_mode}/sp_layout.json
+ARM_BL2_SP_LIST_DTS=${tf_root}/build/fvp/${bin_mode}/sp_list_fragment.dts
 GIC_EXT_INTID=1
 PLAT_TEST_SPM=1