build: Fix dependency of output binaries on linker script

A linker script (scatter file) modification does not cause the
output binaries (tfm_s.axf, tfm_ns.axf) rebuild

Signed-off-by: Anton Komlev <anton.komlev@arm.com>
Change-Id: I3c4d1923ba166053e26835724a306cdf09705aec

toolchain_ARMCLANG.cmake

@@ -236,10 +236,6 @@ macro(target_add_scatter_file target)
         --scatter=$<TARGET_OBJECTS:${target}_scatter>
     )
 
-    add_dependencies(${target}
-        ${target}_scatter
-    )
-
     add_library(${target}_scatter OBJECT)
     foreach(scatter_file ${ARGN})
         target_sources(${target}_scatter
@@ -257,6 +253,12 @@ macro(target_add_scatter_file target)
         )
     endforeach()
 
+    add_dependencies(${target}
+        ${target}_scatter
+    )
+
+    set_target_properties(${target} PROPERTIES LINK_DEPENDS $<TARGET_OBJECTS:${target}_scatter>)
+
     target_link_libraries(${target}_scatter
         platform_region_defs
         psa_interface

toolchain_GNUARM.cmake

@@ -176,10 +176,6 @@ macro(target_add_scatter_file target)
         -T $<TARGET_OBJECTS:${target}_scatter>
     )
 
-    add_dependencies(${target}
-        ${target}_scatter
-    )
-
     add_library(${target}_scatter OBJECT)
     foreach(scatter_file ${ARGN})
         target_sources(${target}_scatter
@@ -198,6 +194,12 @@ macro(target_add_scatter_file target)
         )
     endforeach()
 
+    add_dependencies(${target}
+        ${target}_scatter
+    )
+
+    set_target_properties(${target} PROPERTIES LINK_DEPENDS $<TARGET_OBJECTS:${target}_scatter>)
+
     target_link_libraries(${target}_scatter
         platform_region_defs
         psa_interface

toolchain_IARARM.cmake

@@ -110,9 +110,6 @@ macro(target_add_scatter_file target)
         PRIVATE
         --config $<TARGET_OBJECTS:${target}_scatter>
     )
-    add_dependencies(${target}
-        ${target}_scatter
-    )
 
     add_library(${target}_scatter OBJECT)
     foreach(scatter_file ${ARGN})
@@ -131,6 +128,12 @@ macro(target_add_scatter_file target)
         )
     endforeach()
 
+    add_dependencies(${target}
+        ${target}_scatter
+    )
+
+    set_target_properties(${target} PROPERTIES LINK_DEPENDS $<TARGET_OBJECTS:${target}_scatter>)
+
     target_link_libraries(${target}_scatter
         platform_region_defs
         psa_interface