Poky Reference Manual: Changed source location of the bsp.xml file
Because BSP chapter (bsp.xml) is identical to the single file used
in the BSP Guide (also bsp.xml but in the bsp-guide folder) I have decided
to change where the Poky Reference Manual get the bsp.xml file. This commit
causes it to get the file from the bsp-guide folder instead of an identical
but separate bsp.xml file local to the poky-ref-manual folder.
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>