ACPI: PAD: mark Zhaoxin CPUs NONSTOP TSC correctly

Zhaoxin CPUs support NONSTOP TSC feature, so do not mark these CPUs
TSC unstable when use the acpi_pad driver.
Signed-off-by: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpi_pad.c

@@ -66,6 +66,7 @@ static void power_saving_mwait_init(void)
 	case X86_VENDOR_AMD:
 	case X86_VENDOR_INTEL:
 	case X86_VENDOR_ZHAOXIN:
+	case X86_VENDOR_CENTAUR:
 		/*
 		 * AMD Fam10h TSC will tick in all
 		 * C/P/S0/S1 states when this bit is set.