obexd/irmc: Fix folder for LUID requests

IrMC suport in obexd 0.48 is broken.
This patch fixes nemomobile bug 721.
The patch for is already upstream in bluez 5.14.
I did a build on mer obs, to verify that it builds:
https://build.merproject.org/package/show?package=obexd&project=home%3Ahschmitt%3Abranches%3Anemo%3Adevel%3Amw