sw_sync: export sw_sync API

Needed to let modules link against sw_sync.

Change-Id: I71d3e52677ef21b6e1ecdb84f831491be1f4fbe6
Signed-off-by: Erik Gilling <konkers@android.com>
diff --git a/drivers/base/sw_sync.c b/drivers/base/sw_sync.c
index 21ddf4f..935769c7 100644
--- a/drivers/base/sw_sync.c
+++ b/drivers/base/sw_sync.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/export.h>
 #include <linux/file.h>
 #include <linux/fs.h>
 #include <linux/miscdevice.h>
@@ -42,6 +43,7 @@
 
 	return (struct sync_pt *)pt;
 }
+EXPORT_SYMBOL(sw_sync_pt_create);
 
 static struct sync_pt *sw_sync_pt_dup(struct sync_pt *sync_pt)
 {
@@ -119,6 +121,7 @@
 
 	return obj;
 }
+EXPORT_SYMBOL(sw_sync_timeline_create);
 
 void sw_sync_timeline_inc(struct sw_sync_timeline *obj, u32 inc)
 {
@@ -126,7 +129,7 @@
 
 	sync_timeline_signal(&obj->obj);
 }
-
+EXPORT_SYMBOL(sw_sync_timeline_inc);
 
 #ifdef CONFIG_SW_SYNC_USER
 /* *WARNING*