Add dependencies required for building BPF code

v4l-utils has now support for userspace BPF decoders, but that
require some new dependencies to be added.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

v4l-utils.spec

@@ -1,6 +1,6 @@
 Name:           v4l-utils
 Version:        1.16.2
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Utilities for video4linux and DVB devices
 # libdvbv5, dvbv5 utils, ir-keytable and v4l2-sysfs-path are GPLv2 only
 License:        GPLv2+ and GPLv2
@@ -16,6 +16,8 @@ BuildRequires:  kernel-headers
 BuildRequires:  libjpeg-devel
 BuildRequires:  qt5-qtbase-devel
 BuildRequires:  systemd-devel
+# For BPF decoders
+BuildRequires:  elfutils-libelf-devel clang
 # For /lib/udev/rules.d ownership
 Requires:       udev
 Requires:       libv4l%{?_isa} = %{version}-%{release}
@@ -193,6 +195,9 @@ desktop-file-validate $RPM_BUILD_ROOT%{_datadir}/applications/qv4l2.desktop
 
 
 %changelog
+* Thu Nov 22 2018 Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 1.6.2-2
+- Add dependencies needed to build BPF code
+
 * Mon Nov 19 2018 Peter Robinson <pbrobinson@fedoraproject.org> 1.16.2-1
 - New upstream release 1.16.2