Fix retrieving CKW objects

The previous regex pattern would incorrectly match .o.d dependency files causing the build to fail.

Change-Id: Id717422dc8ca7f4af02d9a07ed06c6687763be80
Signed-off-by: Jakub Sujak <jakub.sujak@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9898
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/SConscript b/SConscript
index ad67701..b5ef6db 100644
--- a/SConscript
+++ b/SConscript
@@ -134,7 +134,7 @@
 
 def get_ckw_obj_list():
     cmake_obj_dir = os.path.abspath("prototype/CMakeFiles/ckw_prototype.dir/src")
-    return recursive_glob(root_dir=cmake_obj_dir, pattern=".*.o")
+    return recursive_glob(root_dir=cmake_obj_dir, pattern=".*.o$")
 
 
 def build_library(name, build_env, sources, static=False, libs=[]):