x86_vendor_is() is doing the elimination now, so we can just drop them
when the Kconfig options aren't set.

Not a functional change.

Signed-off-by: Alejandro Vallejo <alejandro.garciavallejo@amd.com>
---
 xen/arch/x86/cpu/Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/xen/arch/x86/cpu/Makefile b/xen/arch/x86/cpu/Makefile
index 7cfe28b7ec..84b060aa41 100644
--- a/xen/arch/x86/cpu/Makefile
+++ b/xen/arch/x86/cpu/Makefile
@@ -3,13 +3,13 @@ obj-y += microcode/
 obj-y += mtrr/
 
 obj-y += amd.o
-obj-y += centaur.o
+obj-$(CONFIG_CENTAUR) += centaur.o
 obj-y += common.o
-obj-y += hygon.o
 obj-y += intel.o
+obj-$(CONFIG_HYGON) += hygon.o
 obj-y += intel_cacheinfo.o
 obj-$(CONFIG_INTEL) += mwait-idle.o
-obj-y += shanghai.o
+obj-$(CONFIG_SHANGHAI) += shanghai.o
 obj-y += vpmu.o
 obj-$(CONFIG_AMD) += vpmu_amd.o
 obj-$(CONFIG_INTEL) += vpmu_intel.o
-- 
2.43.0