!3 add buildrequires

From: @weidongkl
Reviewed-by: @panchenbo
Signed-off-by: @panchenbo

dde-introduction.spec

@@ -2,7 +2,7 @@
 %global debug_package   %{nil}
 Name:           dde-introduction
 Version:        5.5.6.1
-Release:        1
+Release:        2
 Summary:        Qt platform theme integration plugins
 License:        GPLv3+
 Source0:        %{name}-%{version}.orig.tar.xz
@@ -16,6 +16,7 @@ BuildRequires:  dde-qt-dbus-factory-devel
 BuildRequires:  gsettings-qt-devel
 BuildRequires:  qt5-qtmultimedia-devel
 BuildRequires:  qt5-qtx11extras-devel
+BuildRequires:  libdmr-devel
 
 %description
 Qt platform theme integration plugins for DDE
@@ -44,5 +45,8 @@ popd
 
 
 %changelog
+* Thu Oct 15 2020 weidong <weidong@openeuler.org> - 5.5.6.1-2
+- add buildrequires
+
 * Thu Jul 30 2020 openEuler Buildteam <buildteam@openeuler.org> - 5.5.6.1-1
 - Package init