clk: at91: sam9x60-pll: adapt PMC_PLL_ACR default value

Product datasheet recommends different values for UPLL and PLLA analog control
register.
Adapt accordingly.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Link: https://lkml.kernel.org/r/1573478913-19737-1-git-send-email-eugen.hristev@microchip.com


Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>