usb: gadget: tegra: Fix race condition

usb: gadget: tegra: Fix race condition

There is race condition in turning ON the
PHY. Due to this phy is not turned ON in
some cases. Fixing this will make sure PHY
is turned ON and off properly.

Bug 1197760

Change-Id: I033359b4dc177db6e7c1b2b3f7bd6e7e2ed68ad6
Signed-off-by: Rakesh Bodla <rbodla@nvidia.com>
Reviewed-on: http://git-master/r/171412
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Rohith Seelaboyina <rseelaboyina@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>