Boot2Qt `configure-qtcreator.sh` looks for `sdktool` in the wrong path

After building custom yocto image, running the command as stated [here](https://doc.qt.io/Boot2Qt/b2qt-how-to-create-b2qt-image.html#configuring-qt-creator-for-linux-toolchain) to configure qtcreator with the new kit leads to an error. This is of course on my development machine, not the target device.

I ran into this issue last week so don't have the exact runtime error output, but it was trying to look for `sdktool` in a wrong path.

Workaround: I had to copy the `sdktool` executable over to where the `configure-qtcreator.sh` script was looking for it. (both of them are in `~/Qt/Tools`, but in different locations)

Fix: perhaps patch the `configure-qtcreator.sh` script so that people don't run into this.