add Intel Elkhart Lake ids

add Intel Elkhart Lake ids

from:
Intel Atom x6000E Series, and Intel Pentium and Celeron N and
J Series Processors for IoT Applications
Datasheet, Volume 1
Document Number: 636112-1.6

AHCI changed from 0x4b60 to 0x4b63 to match what is seen on
Dell EMC Edge Gateway 3200 with Atom x6425RE and
Compulab fitlet3 with Atom x6425E.

0x4b7f is documented as Reserved but is SRAM

ok patrick@ jan@