usb: dwc3-msm: Read scm_dev_id before probing dwc3

When dwc3 core is probed and initialized, it will trigger
DWC3_CONTROLLER_POST_RESET_EVENT which in turn calls the
security configuration restore function. However, the scm_dev_id
value has not been populated from device tree at this time yet.
Fix by reading this value before calling of_platform_populate().

CRs-fixed: 591307
Change-Id: I08478db43e31fc332fc8a046f70287465be6c543
Signed-off-by: Jack Pham <jackp@codeaurora.org>