trivial: synaptics: keep system ID in hexadecimal
trivial: synaptics: keep system ID in hexadecimal

superm1/fwupd,superm1/fwupd,fwupd/fwupd,hughsie/fwupd,vathpela/fwupd,fwupd/fwupd,vathpela/fwupd,vathpela/fwupd,fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,vathpela/fwupd,hughsie/fwupd,hughsie/fwupd,superm1/fwupd