arm: socfpga: Fix ArriaV SoCDK PLL config

Pull out the ArriaV SoCDK clock config from ancient Altera U-Boot
"rel_socfpga_v2013.01.01_15.05.01_pr" and implant those values into
mainline to get a booting ArriaV SoCDK.

Signed-off-by: Marek Vasut <marex@denx.de>