Camera2: Fix metering/focusing region coordinates, minor bugs

- Use active pixel array-based coordinates instead of the normalized
  camera API coordinates for ae/awb/af regions
- Fix calculation of UV stride for YV12 format

Bug: 6243944
Change-Id: I80cbd989858b0a3cb75c6f536c145e16e44fdb25
diff --git a/services/camera/libcameraservice/Camera2Client.h b/services/camera/libcameraservice/Camera2Client.h
index e2f5cc4..a3ab128 100644
--- a/services/camera/libcameraservice/Camera2Client.h
+++ b/services/camera/libcameraservice/Camera2Client.h
@@ -464,6 +464,8 @@
     // Map from sensor active array pixel coordinates to normalized camera
     // parameter coordinates. The former are (0,0)-(array width - 1, array height
     // - 1), the latter from (-1000,-1000)-(1000,1000)
+    int normalizedXToArray(int x) const;
+    int normalizedYToArray(int y) const;
     int arrayXToNormalized(int width) const;
     int arrayYToNormalized(int height) const;