From looking at the history the BMM150 rotation was initially 0. Then,
this was changed to 6 when the intent was to only change it for Skynode.
A bit later, the rotation was changed back to 0, but only for Skynode.
This tells me that rotation 0 was correct for all 6X including Skynode
all along.
Signed-off-by: Julian Oes <julian@oes.ch>