acpi: hwregs.c only needed on x86.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

diff --git a/xen/drivers/acpi/Makefile b/xen/drivers/acpi/Makefile
index 1b9e96c654dca6d02420ce6fc13d3c1ede11d787..2a265e35a432f32f871ba874dcdc31fa88b7bfba 100644 (file)
--- a/xen/drivers/acpi/Makefile
+++ b/xen/drivers/acpi/Makefile
@@ -1,4 +1,5 @@
 obj-y += tables.o
 obj-y += numa.o
-obj-y += hwregs.o
 obj-y += osl.o
+
+obj-$(x86) += hwregs.o