fix: NS buffer (48b PA) memory sharing between SPs

Fix [1] by increasing cactus number of xlat tables.
This permits running the SP SP mem sharing of a buffer located at a
high physical PA region.
Test config [2] provides the model parameters to configurare the PE,
interconnect and SMMU to handle 48b physical address size.

[1] https://review.trustedfirmware.org/c/TF-A/tf-a-tests/+/13599
[2] https://review.trustedfirmware.org/c/ci/tf-a-ci-scripts/+/15445

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: Ia290f15a6d30c898a5219d2bc1c3949b6ae7e7ef
diff --git a/plat/arm/fvp/include/platform_def.h b/plat/arm/fvp/include/platform_def.h
index 2a12fde..b8871c4 100644
--- a/plat/arm/fvp/include/platform_def.h
+++ b/plat/arm/fvp/include/platform_def.h
@@ -253,7 +253,7 @@
 #define MAX_MMAP_REGIONS		50
 #else
 #if IMAGE_CACTUS
-#define MAX_XLAT_TABLES			8
+#define MAX_XLAT_TABLES			9
 #else
 #define MAX_XLAT_TABLES			5
 #endif