Merge changes I3c20611a,Ib1671011,I5eab3f33,Ib149b3ea into integration

* changes:
  refactor(plat/nxp): refine api to read SVR register
  refactor(plat/nxp): each errata use a seperate source file
  refactor(plat/nxp): use a unified errata api
  refactor(plat/soc-lx2160): move errata to common directory