lib/oelite: Add COMPATIBLE_BUILD|HOST|TARGET_CPU_FAMILIES
lib/oelite: Add COMPATIBLE_BUILD|HOST|TARGET_CPU_FAMILIES

Add support for COMPATIBLE_BUILD_CPU_FAMILIES,
COMPATIBLE_HOST_CPU_FAMILIES and COMPATIBLE_TARGET_CPU_FAMILIES.
Making it possible to restrict recipes to specific cpu families.
The families are given in the space separated string variables
BUILD_CPU_FAMILIES, HOST_CPU_FAMILIES and TARGET_CPU_FAMILIES.

(similar to COMPATIBLE_MACHINES)

hundeboll/core,sknsean/core,sknsean/core,diorcety/oe-lite-core,sknsean/core,hundeboll/core,diorcety/oe-lite-core,sknsean/core,sknsean/core,hundeboll/core,hundeboll/core