[REG:5.9.3->5.9.4] Front camera orientation is wrong for iOS devices which leads to upside down images

The orientation of the front camera on iOS devices is reported to be 90 degrees when using Qt 5.9.4 and later.  The correct orientation should be 270 degrees.  This results in the image being shown upside down.

Qt 5.9.3 and earlier correctly report the camera orientation as 270 degrees, and the image is displayed correctly.

I've also tested the back camera, and this works ok in all Qt versions.

I have attached a very simple QML application that demonstrates the problem.  If this is built with Qt 5.9.3 or earlier, the camera image is shown correctly oriented.  If it is built with Qt 5.9.4 or later, the camera image is shown upside down.