clk: remove unnecessary (void*) conversions

Pointer variables of void * type do not require type cast.

Signed-off-by: Yu Zhe <yuzhe@nfschina.com>
Link: https://lore.kernel.org/r/20230316075826.22754-1-yuzhe@nfschina.com


Signed-off-by: Stephen Boyd <sboyd@kernel.org>