mm/cma_debug.c: remove blank lines before DEFINE_SIMPLE_ATTRIBUTE()

mm/cma_debug.c: remove blank lines before DEFINE_SIMPLE_ATTRIBUTE()

Like EXPORT_SYMBOL(): the positioning communicates that the macro pertains
to the immediately preceding function.

Cc: Dmitry Safonov <[email protected]>
Cc: Michal Nazarewicz <[email protected]>
Cc: Stefan Strogin <[email protected]>
Cc: Marek Szyprowski <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Pintu Kumar <[email protected]>
Cc: Weijie Yang <[email protected]>
Cc: Laurent Pinchart <[email protected]>
Cc: Vyacheslav Tyrtov <[email protected]>
Cc: Aleksei Mateosian <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>