This patch makes declarations bind to definitions within the same module
to prevent the potential ambiguity if referenced directly.
AddressSanitizer think they violated one definition rule, although
those symbols are accessed by address through their modules and do
not depend on the order of the libararies loaded.
Probe the Thuraya XT modem by USB vendor ID; there are no RS232 versions
to my knowledge.
One of my computers exhibiting the probing issue (VID/PID of the PCI
host controller instead of the USB device) fixed itself after a reboot.
Signed-off-by: Thomas Sailer <t.sailer@alumni.ethz.ch>