dt-bindings:Add macros for QMP USB register offsets on LITO

Add macro definitions in a dt-bindings header file for all
the QMP USB DP register offsets.

Change-Id: Ic03f941de8f6c03c0bc36acc09b83b34512aef9f
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>