7501968808
For native build, enabling building the highest cpu_instruction_set supported by the build host, including the new POWER10. For cross compile, verifying that the compiler supports the cpu_instruction_set specified in the cross-file Signed-off-by: Thinh Tran <thinhtr@linux.vnet.ibm.com> Reviewed-by: David Christensen <drc@linux.vnet.ibm.com>