Add BuildRequires: make

https://fedoraproject.org/wiki/Changes/Remove_make_from_BuildRoot

portaudio.spec

@@ -12,6 +12,7 @@ Patch2:         portaudio-pkgconfig-alsa.patch
 # http://audacity.googlecode.com/svn/audacity-src/trunk/lib-src/portmixer/portaudio.patch
 Patch3:         portaudio-audacity.patch
 
+BuildRequires: make
 BuildRequires:  doxygen
 BuildRequires:  gcc-c++
 BuildRequires:  alsa-lib-devel