clk: berlin: Pass correct type to hw provider registration

Dan Carpenter reports that we're passing a pointer to a pointer
here when we should just be passing a pointer. Pass the right
pointer so that the of_clk_hw_onecell_get() sees the appropriate
data pointer on its end.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Jisheng Zhang <jszhang@marvell.com>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Stephen Boyd <stephen.boyd@linaro.org>
Fixes: f6475e29 ("clk: berlin: Migrate to clk_hw based registration and OF APIs")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>