fix(ti): fix TISCI API changes during refactor

The refactor caused many APIs to be regressed due to copy paste changes
so fix them.

Fixes: 6688fd7a ("refactor(ti): refactor ti_sci_{setup,do}_xfer to allow zero size response")
Change-Id: I03a808fa0bf2cbefbc1c9924bdaf4cfb2ad7f2cb
Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>