Use make_build macro

This will make it possible for buildroots to inject arguments to make by
redefining the %__make macro.

libpsm2.spec

@@ -53,7 +53,7 @@
 Summary: Intel PSM Libraries
 Name: libpsm2
 Version: 11.2.86
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: BSD or GPLv2
 URL: https://github.com/01org/opa-psm2/
 
@@ -104,7 +104,7 @@ Support for MPIs linked with PSM versions < 2
 
 %build
 %{set_build_flags}
-make %{?_smp_mflags}
+%{make_build}
 
 %install
 %make_install
@@ -140,6 +140,9 @@ rm -f %{buildroot}%{_libdir}/*.a
 %endif
 
 %changelog
+* Fri Jan 17 2020 Tom Stellard <tstellar@redhat.com> - 11.2.86-2
+- Use make_build macro
+
 * Thu Oct 03 2019 Honggang Li <honli@redhat.com> - 11.2.86-1
 - Rebase to latest upstream release PSM2_11.2.86
 - Resolves: bz1758390