usb: qmp: Perform phy init sequence based on phy clk scheme

Phy init sequence require different set of register values to
write based on the TCSR PHY_SCHEME_SEL register
value. If PHY_CLK_SCHEME_SEL bit is set single ended clk
scheme is selected otherwise differential clk scheme is
selected.

Change-Id: Ic8a5a9cb8d173e23385faa1218db7436051e21eb
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>