ARM: dts: msm: Add dload cookie address for android usb device for msm8939

Add dload cookie address for android usb device node which is used
by android driver to update PID and serial number for enumeration
in DLOAD mode on same com port.

Change-Id: I3046851c18104afaeaaf630b2c84cb567da3488b
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>