[ACPI] delete CONFIG_ACPI_BUS

it is a synonym for CONFIG_ACPI

Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 060afaf..b6a3c91 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -35,8 +35,8 @@
 processor-objs	+= processor_perflib.o			
 endif
 
-obj-$(CONFIG_ACPI_BUS)		+= sleep/
-obj-$(CONFIG_ACPI_BUS)		+= bus.o glue.o
+obj-y				+= sleep/
+obj-y				+= bus.o glue.o
 obj-$(CONFIG_ACPI_AC) 		+= ac.o
 obj-$(CONFIG_ACPI_BATTERY)	+= battery.o
 obj-$(CONFIG_ACPI_BUTTON)	+= button.o
@@ -55,5 +55,5 @@
 obj-$(CONFIG_ACPI_ASUS)		+= asus_acpi.o
 obj-$(CONFIG_ACPI_IBM)		+= ibm_acpi.o
 obj-$(CONFIG_ACPI_TOSHIBA)	+= toshiba_acpi.o
-obj-$(CONFIG_ACPI_BUS)		+= scan.o motherboard.o
+obj-y				+= scan.o motherboard.o
 obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)	+= acpi_memhotplug.o