Needs Bios Update for GA403 to let amd pstate epp setting work under linux

[zyldragoon]

when I tring to set amd pstate epp under linux at my ga403 laptop, i got the same error as

https://www.reddit.com/r/linuxhardware/comments/1e1225m/amd_pstate_stuck_in_performance_for_energy/

after some debug I found the same error from dmesg

ACPI CPPC: _CPC in PCC is not supported

so I think asus would need to release another bios update for ga403 to enable this function.

Thanks.