clk: zynqmp: Replaced strncpy() with strscpy()

Replaced strncpy() with strscpy() as the clock names are supposed to
be NULL terminated.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Link: https://lore.kernel.org/r/20220510070154.29528-2-shubhrajyoti.datta@xilinx.com


Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>