KGDB_SERIAL_CONSOLE check for module

Depend on KGDB_SERIAL_CONSOLE being set to N rather than !Y, since it can
be built as a module.
Signed-off-by: NMike Frysinger <vapier.adi@gmail.com>
Signed-off-by: NBryan Wu <cooloney@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/serial/Kconfig

@@ -707,7 +707,7 @@ choice
 
 config SERIAL_BFIN_DMA
 	bool "DMA mode"
-	depends on !DMA_UNCACHED_NONE && !KGDB_SERIAL_CONSOLE
+	depends on !DMA_UNCACHED_NONE && KGDB_SERIAL_CONSOLE=n
 	help
 	  This driver works under DMA mode. If this option is selected, the
 	  blackfin simple dma driver is also enabled.