cm-t35: print PCB revision information

Buffer the PCB revision to avoid multiple eeprom accesses
for the same data and print it as a part of board information.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tom Rini <trini@ti.com>
3 files changed