clk: imx8m: reduce rate table duplication

Re-factor the imx8m[nmpq] rate tables into the common pll1416x clock
driver.

43cdaa1567ad3 ("clk: imx8mm: Move 1443X/1416X PLL clock structure to common place")

Signed-off-by: Angus Ainslie <angus@akkea.ca>
Tested-by: Adam Ford <aford173@gmail.com> #imx8mm-beacon