Camera1: Rename setPreviewTexture to ...Target for clarity

Bug: 10312644
Change-Id: I19976188f0359bfd177209fb40145defdae9c740
diff --git a/media/libstagefright/CameraSource.cpp b/media/libstagefright/CameraSource.cpp
index 5a26b06..3017fe7 100644
--- a/media/libstagefright/CameraSource.cpp
+++ b/media/libstagefright/CameraSource.cpp
@@ -536,7 +536,7 @@
     if (mSurface != NULL) {
         // This CHECK is good, since we just passed the lock/unlock
         // check earlier by calling mCamera->setParameters().
-        CHECK_EQ((status_t)OK, mCamera->setPreviewTexture(mSurface));
+        CHECK_EQ((status_t)OK, mCamera->setPreviewTarget(mSurface));
     }
 
     // By default, do not store metadata in video buffers