usb: phy: tegra: increase the timeout for phy clk

usb: phy: tegra: increase the timeout for phy clk

Increase the timeout for phy clk to stabilize

Bug 1485579

Signed-off-by: Preetham Chandru R <pchandru@nvidia.com>
Change-Id: Ic73436dd5b74f327707b0c36ef0323d6decd9c67
Reviewed-on: http://git-master/r/408597
(cherry picked from commit 921b5ba58fc4e9427824d16bd3648055ca11b37c)
Reviewed-on: http://git-master/r/455528
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>
Reviewed-by: Matthew Pedro <mapedro@nvidia.com>