ARM: dts: msm: Enable otg-disable-reset flag for msm8916

Currently as part of disconnect processing, USB driver does
link and PHY reset before putting USB HW in low power mode.
This HW reset is not required. Hence enable otg-disable-reset
flag to avoid PHY reset.

CRs-Fixed: 794918
Change-Id: I8c9f336d098e812a7181b92dc1c48637ec8d84c2
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>