clk: efm32gg: Pass correct type to hw provider registration

clk: efm32gg: 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: Stephen Boyd <stephen.boyd@linaro.org>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Fixes: 37d74c0b89b5 ("clk: efm32gg: Migrate to clk_hw based OF and registration APIs")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>