imx: imx8ulp: Update clocks to meet max rate restrictions

imx: imx8ulp: Update clocks to meet max rate restrictions

Update PLL3/PLL4 PFD and USDHC clocks to meet maximum frequency
restrictions. Detail clock rate changes in the patch:

PLL3 PFD2: 389M -> 324M
PLL3 PFD3: 336M -> 389M
PLL3 PFD3: DIV1 336M -> 389M (OD), 194M (ND/LD)
PLL3 PFD3: DIV2 336M -> 194M (OD), 97M (ND/LD)

PLL4 PFD0: 792M -> 594M
PLL4 PFD2: 792M -> 316.8M

NIC_AP:    96M (ND) -> 192M,  48M (LD) -> 96M
NIC_LPAV:  198 (ND) -> 192M,  99M (LD) -> 96M

USDHC0:    PLL3 PFD3 DIV1, 389M (OD), 194M (ND/LD)
USDHC1:    PLL3 PFD3 DIV2, 194M (OD), 97M (ND/LD)
USDHC2:    PLL3 PFD3 DIV2, 194M (OD), 97M (ND/LD)

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>