weston: fix a patch fuzz issue

weston: fix a patch fuzz issue

Fix a following QA warning:
| WARNING: weston-5.0.0.imx-r0 do_patch: Fuzz detected:
|
| Applying patch 0003-weston-touch-calibrator-Advertise-the-touchscreen-ca.patch
| patching file weston.ini.in
| Hunk #1 succeeded at 7 with fuzz 2 (offset 4 lines).
|
| The context lines in the patches can be updated with devtool:
|
|    devtool modify weston
|    devtool finish --force-patch-refresh weston <layer_path>
|
| Don't forget to review changes done by devtool!

Signed-off-by: Ming Liu <ming.liu@toradex.com>