Recent Zhaoxin platforms support ACPI _PDC object, so add Zhaoxin
CPU vendor support in the function arch_has_acpi_pdc().

Signed-off-by: Tony W Wang-oc <TonyWWang-oc@zhaoxin.com>
---
  arch/x86/include/asm/acpi.h | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 65064d9..b719745 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -89,7 +89,8 @@ static inline bool arch_has_acpi_pdc(void)
  {
  	struct cpuinfo_x86 *c = &cpu_data(0);
  	return (c->x86_vendor == X86_VENDOR_INTEL ||
-		c->x86_vendor == X86_VENDOR_CENTAUR);
+		c->x86_vendor == X86_VENDOR_CENTAUR ||
+		c->x86_vendor == X86_VENDOR_ZHAOXIN);
  }

  static inline void arch_acpi_set_pdc_bits(u32 *buf)
-- 
2.7.4