Leave less space between notificaitons.

    <dimen name="notification_max_height">256dp</dimen>

    <!-- Height of a small notification in the status bar plus glow, padding, etc -->

    <dimen name="notification_row_min_height">72dp</dimen>

    <dimen name="notification_row_min_height">70dp</dimen>

    <!-- Height of a large notification in the status bar plus glow, padding, etc -->

    <dimen name="notification_row_max_height">260dp</dimen>

    <dimen name="status_bar_icon_padding">0dp</dimen>

    <!-- half the distance between notifications in the panel -->

    <dimen name="notification_divider_height">4dp</dimen>

    <dimen name="notification_divider_height">3dp</dimen>

    <!-- Notification drawer tuning parameters (phone UI) -->

    <!-- Initial velocity of the shade when expanding on its own -->