sound: usb: qmi: Clean up log messages

Make the log prints more consistent when displaying memory addresses.
Change %pK to %pa for phys_addr_t, print hex instead of decimal for
the iova/vas.  Also print the offset of the SG entries.

Change-Id: I885156b8b680c2bfb8c4c640c5ec0ff6cfbae88e
Signed-off-by: Jack Pham <jackp@codeaurora.org>