app_process is now a symlink.

app_process is now a symlink to app_process32 or
app_process64, so we have to update the selinux
rules to explicitly refer to them.

See change 5a7ee9ad63d for context.

Change-Id: I7f7a107d79a8f7a3c193f97809e1e737540258f1

file_contexts

@@ -125,7 +125,7 @@
 /system/bin/sh		--	u:object_r:shell_exec:s0
 /system/bin/run-as	--	u:object_r:runas_exec:s0
 /system/bin/bootanimation u:object_r:bootanim_exec:s0
-/system/bin/app_process	u:object_r:zygote_exec:s0
+/system/bin/app_process32	u:object_r:zygote_exec:s0
 /system/bin/app_process64	u:object_r:zygote_exec:s0
 /system/bin/servicemanager	u:object_r:servicemanager_exec:s0
 /system/bin/surfaceflinger	u:object_r:surfaceflinger_exec:s0