init:usb.sh: Set tx_qmult to 5 if interconnect is pcie

if the interconnect is pcie higher data rates are expected.
Hence set the tx queue multiplicator to 5.

Change-Id: I114bcd0328b06ac86e21baba9569e1daa4097c61
(cherry picked from commit 8ed78eadcb6bfc79c9f0c50c98f36fcbedfe9fba)
init:usb.sh/rc: Update min cpu boost frequency

Update min cpu boost frequency to 1036800  when usb tethering
is enabled on platforms where esoc is pcie/pcie+hsic.

Change-Id: Ic76d5cb32a0b125b483df7bff783630dca1c2101
(cherry picked from commit b516c4b054aced8917de7dc3ba7adce9147c4d38)