treewide: cleanup continuations and remove logging message whitespace

Using C line continuation inside format strings is error prone.
Clean up the unintended whitespace introduced by misuse of \.
Neaten correctly used line continations as well for consistency.

drivers/scsi/arcmsr/arcmsr_hba.c has these errors as well,
but arcmsr needs a lot more work and the driver should likely be
moved to staging instead.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/tty/serial/mfd.c

@@ -49,8 +49,8 @@
 
 static int hsu_dma_enable;
 module_param(hsu_dma_enable, int, 0);
-MODULE_PARM_DESC(hsu_dma_enable, "It is a bitmap to set working mode, if \
-bit[x] is 1, then port[x] will work in DMA mode, otherwise in PIO mode.");
+MODULE_PARM_DESC(hsu_dma_enable,
+		 "It is a bitmap to set working mode, if bit[x] is 1, then port[x] will work in DMA mode, otherwise in PIO mode.");
 
 struct hsu_dma_buffer {
 	u8		*buf;