Backlight keys FDI addition for HP 6730b

Binary package hint: hal-info

The HP Compaq 6730b needs similar Hotkey data to the 6730s, already listed in /usr/share/hal/fdi/information/10freedesktop/30-keymap-hp.fdi:

          <match key="/org/freedesktop/Hal/devices/computer:system.hardware.product" contains="6730b">
            <!-- HP Compaq 6730b -->
            <append key="input.keymap.data" type="strlist">e012:brightnessdown</append> <!-- FnF9 (brightness down) -->
            <append key="input.keymap.data" type="strlist">e017:brightnessup</append> <!-- FnF10 (brightness up) -->
          </match>

I'd have suggested matching the two together, perhaps dropping the "b" and "s" suffixes from the match rule, but I note that on my keyboard, the function keys are FnF9 and FnF10, not the same as the comments listed in the 6730s match. Not sure if that is a mistake or not, or if it really matters