clk: lmk04832: declare variables as const when possible

clk: lmk04832: declare variables as const when possible

Fix the following warning reported by the kernel test robot.

	cppcheck possible warnings: (new ones prefixed by >>, may not real problems)
	>> drivers/clk/clk-lmk04832.c:357:15: warning: Variable 'pll2_p' can be declared with const [constVariable]
	    unsigned int pll2_p[] = {8, 2, 2, 3, 4, 5, 6, 7};

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/all/202203312017.5YW13Jr4-lkp@intel.com/
Signed-off-by: Liam Beguin <liambeguin@gmail.com>
Link: https://lore.kernel.org/r/20221120030257.531153-2-liambeguin@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>