Change footprint name to fix ambiguities

[M3gaFr3ak]

The following footprint has an ambiguous name: footprints/Leadless - DFN/PCB - LEADLESS - DFN - MAXIM TDFN-8 2X2MM.PCBLIB

Maxim has 10 differrent TDFN-8 packages (https://www.maximintegrated.com/en/design/packaging/package-information.html?a=2&f=), so the footprint name should include the Maxim variant-code as other maxim footprints do.

The correct variant-code is T822+2 in this case (extracted from the datasheet). The footprint also has an exposed pad (noted with '-EP' in the maxim footprint name), maybe this should also be included in the footprint's name.