!429 [openEuler-1.0.-LTS] ACPI, x86: Improve Zhaoxin processors support for NONSTOP TSC

Merge Pull Request from: @leoliu-oc 
 
Zhaoxin CPUs which use CENTAUR as vendor id, also have NONSTOP TSC feature.
So enable the ACPI driver support for it too.

Issue
https://gitee.com/openeuler/kernel/issues/I6IZG5

Test
N/A

Knowe Issue
N/A

Default config change
N/A 
 
Link:https://gitee.com/openeuler/kernel/pulls/429 

Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> 
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com> 
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> 

drivers/acpi/acpi_pad.c

@@ -73,6 +73,7 @@ static void power_saving_mwait_init(void)
 	case X86_VENDOR_HYGON:
 	case X86_VENDOR_AMD:
 	case X86_VENDOR_INTEL:
+	case X86_VENDOR_CENTAUR:
 	case X86_VENDOR_ZHAOXIN:
 		/*
 		 * AMD Fam10h TSC will tick in all