Add spi mailbox section to devtree config file

Add a section to the config file to select the address range
to use for mapping the PNOR into BMC memory.  If the LPC
mailbox isn't being used on a system this whole section
can be removed.

Change-Id: I981e4d1aca2e09997c874fcc5b528e846193e2eb
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
1 file changed