ARM: PL08x: don't assume that the LLI pointer has the bus bit clear

We only want use the address of the LLI pointer when locating the
corresponding structure in memory, so clear the master bus selection
bit.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>