xen/common: Sort the obj build order

Suggested-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

xen/common/Makefile

@@ -1,4 +1,5 @@
 obj-y += bitmap.o
+obj-y += bsearch.o
 obj-$(CONFIG_CORE_PARKING) += core_parking.o
 obj-y += cpu.o
 obj-y += cpupool.o
@@ -43,7 +44,6 @@ obj-y += schedule.o
 obj-y += shutdown.o
 obj-y += softirq.o
 obj-y += sort.o
-obj-y += bsearch.o
 obj-y += smp.o
 obj-y += spinlock.o
 obj-y += stop_machine.o