redhat: fix CMake flags

[ Upstream commit d452c0f ]

Backport commit 12e8ad3 for redhat specific spec file to fix
broken pkgconf files.

Fixes: 3888efc ("redhat: copy stock spec for RH customization")
Signed-off-by: Honggang Li <honli@redhat.com>
Signed-off-by: Nicolas Morey-Chaisemartin <nmoreychaisemartin@suse.com>

redhat/rdma-core.spec

@@ -243,11 +243,11 @@ easy, object-oriented access to IB verbs.
          -DCMAKE_BUILD_TYPE=Release \
          -DCMAKE_INSTALL_BINDIR:PATH=%{_bindir} \
          -DCMAKE_INSTALL_SBINDIR:PATH=%{_sbindir} \
-         -DCMAKE_INSTALL_LIBDIR:PATH=%{_libdir} \
+         -DCMAKE_INSTALL_LIBDIR:PATH=%{_lib} \
          -DCMAKE_INSTALL_LIBEXECDIR:PATH=%{_libexecdir} \
          -DCMAKE_INSTALL_LOCALSTATEDIR:PATH=%{_localstatedir} \
          -DCMAKE_INSTALL_SHAREDSTATEDIR:PATH=%{_sharedstatedir} \
-         -DCMAKE_INSTALL_INCLUDEDIR:PATH=%{_includedir} \
+         -DCMAKE_INSTALL_INCLUDEDIR:PATH=include \
          -DCMAKE_INSTALL_INFODIR:PATH=%{_infodir} \
          -DCMAKE_INSTALL_MANDIR:PATH=%{_mandir} \
          -DCMAKE_INSTALL_SYSCONFDIR:PATH=%{_sysconfdir} \