Add RPM and DEB package generator for Raspberry Pi package build.

Source/CMakeLists.txt

@@ -98,6 +98,7 @@ if (ANDROID)
     set (CPACK_SYSTEM_NAME Android)
 elseif (RASPI)
     set (CPACK_SYSTEM_NAME Raspberry-Pi)
+    list (APPEND CPACK_GENERATOR RPM DEB)
 elseif (IOS)
     set (CPACK_SYSTEM_NAME iOS)
 elseif (APPLE)