uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/misc/gammu/systemd.patch

@@ -0,0 +1,30 @@
+diff --git a/cmake/templates/gammu.spec.in b/cmake/templates/gammu.spec.in
+index 8302353..e3ca59a 100644
+--- a/cmake/templates/gammu.spec.in
++++ b/cmake/templates/gammu.spec.in
+@@ -387,9 +387,9 @@ fi
+ %doc %{_mandir}/man7/gammu-smsd-run.7*
+ %doc %{_mandir}/man7/gammu-smsd-sql.7*
+ %doc %{_mandir}/man7/gammu-smsd-tables.7*
+-%dir %{_libexecdir}/systemd
+-%dir %{_libexecdir}/systemd/system
+-%{_libexecdir}/systemd/system/gammu-smsd.service
++%dir %{_prefix}/systemd
++%dir %{_prefix}/systemd/system
++%{_prefix}/systemd/system/gammu-smsd.service
+ 
+ %files -n libGammu%{so_ver} -f libgammu.lang
+ %defattr(-,root,root,-)
+diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
+index 78cc7fc..d674c36 100644
+--- a/contrib/CMakeLists.txt
++++ b/contrib/CMakeLists.txt
+@@ -97,7 +97,7 @@ endif (INSTALL_BASH_COMPLETION)
+ if (WITH_SYSTEMD)
+     install (
+         FILES init/gammu-smsd.service
+-        DESTINATION "${SYSTEMD_SERVICES_INSTALL_DIR}"
++        DESTINATION "${CMAKE_INSTALL_PREFIX}/systemd"
+         COMPONENT "systemd"
+     )
+ endif (WITH_SYSTEMD)