Make IPoIB data_debug_level module parameter static to the single file
where it is used.  Also Rename IPoIB module parameter variable from
"debug_level" to "ipoib_debug_level".  This avoids possible name
clashes if IPoIB is built into the kernel.  We use module_param_named
so that the user-visible parameter names remain the same.
Signed-off-by: Tom Duffy <tduffy@sun.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>