linux-phytec-ti

ipmi: explicitly include of_address.h and of_irq.h

of_address.h and of_irq.h are implicitly included on powerpc. Adding
them fixes builds on non-powerpc platforms.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>