clk: ti: use kcalloc() instead of kzalloc()

Use 2-factor multiplication argument form kcalloc() instead
of kzalloc().

Link: https://github.com/KSPP/linux/issues/162


Signed-off-by: Ethan Carter Edwards <ethan@ethancedwards.com>
Link: https://lore.kernel.org/r/xfjn4wqrhukvi45dkgkbulamq3242eijn7567vxwaxznh4ebdr@waat7u3l2mhi


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