usb: phy: msm-hsphy: Support block reset using TCSR

On newer platforms a TCSR register can be specified which must
be written to in order to assert/deassert a block reset. Also
this register has a bit setting used to initialize the PHY MUX
to the right controller for normal operation.

Change-Id: Idd199af7b114c929cc5fe0827c1e63c269161442
Signed-off-by: Jack Pham <jackp@codeaurora.org>