Fix condition for building test vectors

Signed-off-by: Adrian Gielniewski <adrian.gielniewski@nordicsemi.no>

Author: adigie

src/credentials/BUILD.gn

@@ -108,10 +108,10 @@ static_library("credentials") {
   # is changed to generate it's own credentials instead of using Test credentials.
   # For some platforms test builds, which are bilding monolithic test library these files are not needed.
   import("${chip_root}/build/chip/tests.gni")
-  if (!(chip_build_tests && (chip_device_platform == "mbed" ||
-                             chip_device_platform == "openiotsdk" ||
-                             chip_device_platform == "nrfconnect" ||
-                             chip_device_platform == "esp32"))) {
+  if (chip_build_tests && !(chip_device_platform == "mbed" ||
+                            chip_device_platform == "openiotsdk" ||
+                            chip_device_platform == "nrfconnect" ||
+                            chip_device_platform == "esp32")) {
     sources += [
       "tests/CHIPAttCert_test_vectors.cpp",
       "tests/CHIPAttCert_test_vectors.h",