tests/Makefile.am: add file datawizard/interfaces/block/block_opencl_kernel.cl to dist

tests/Makefile.am

@@ -34,7 +34,8 @@ EXTRA_DIST =					\
 	datawizard/interfaces/multiformat/multiformat_opencl_kernel.cl \
 	datawizard/interfaces/multiformat/multiformat_conversion_codelets_kernel.cl \
 	datawizard/interfaces/multiformat/advanced/generic.h \
-	datawizard/interfaces/csr/csr_opencl_kernel.cl
+	datawizard/interfaces/csr/csr_opencl_kernel.cl \
+	datawizard/interfaces/block/block_opencl_kernel.cl
 
 CLEANFILES = 					\
 	*.gcno *.gcda *.linkinfo		\