thunderbolt: Read switch uid from EEPROM

Add eeprom access code and read the uid during switch initialization.
The UID will be used to check device identity after suspend.

Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/thunderbolt/Makefile
Simple merge

diff --cc drivers/thunderbolt/eeprom.c
Simple merge

diff --cc drivers/thunderbolt/switch.c
Simple merge

diff --cc drivers/thunderbolt/tb.h
Simple merge