New backport upstream fix for access to the external storage in PTP mode

[banzeo]

Hello,

Would it be possible to backport this upstream fix ? It permits access to the external storage in PTP mode.

https://android-review.googlesource.com/c/platform/packages/services/Mtp/+/1490256

Diff - 2c959b7e36696ce41bceeb0345a45d14b379b6f1^! - platform/packages/services/Mtp - Git at Google

For android 4 to 10, file to change is located here :
packages/providers/MediaProvider/src/com/android/providers/media/MtpService.java
From android 11, new locations is
packages/services/Mtp/src/com/android/mtp/MtpService.java

Thanks