uboot-imx

imx: mx6ull: misc soc update

Update misc SOC related settings for i.MX6ULL, such as FEC mac address,
cpu speed grading and mmdc channel mask clearing.

Also update s_init to skip pfd reset.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>