Camera: set mNumberOfNormalCameras correctly

Need to set the number correctly when a camera HAL is not present.

Bug: 25951590
Change-Id: I666acf7a2a523c51f2c2ae88ff690ca9dccda08c
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index ebf6779..37e4af1 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -153,6 +153,7 @@
         ALOGE("Could not load camera HAL module: %d (%s)", err, strerror(-err));
         logServiceError("Could not load camera HAL module", err);
         mNumberOfCameras = 0;
+        mNumberOfNormalCameras = 0;
         return;
     }