Vdet pin of NX5P1100 switch is goes high Vbus is supplied to it.
This DET pin is open drain PMOS output with default state low.
And its connected to GPIO 7 of Wailua which is used for detection
of vbus. Here we need to pull up GPIO 7, so that DET can go high
when Vbus is detected on NX5P switch.
Change-Id: I81298ffb779f90ba169c9ce9758b4cde9d1c0276