Commit the removal of a whitespace to record the proper commit message

for the r248519:

For the cam-attached HBAs, allow the driver to specify that it accepts
the unmapped bio by the PIM_UNMAPPED flag.  The CAM passes the
CAM_DATA_BIO data transfer type request for the unmapped bio, and the
driver could use the bus_dmamap_load_ccb() as a helper to
transparently handle the ccb.

Sponsored by:	The FreeBSD Foundation
Reviewed by:	scottl
Tested by:	pho, scottl

sys/cam/cam_ccb.h

@@ -99,7 +99,7 @@ typedef enum {
 	CAM_MSGB_VALID		= 0x10000000,/* Message buffer valid	      */
 	CAM_STATUS_VALID	= 0x20000000,/* Status buffer valid	      */
 	CAM_DATAB_VALID		= 0x40000000,/* Data buffer valid	      */
-	
+
 /* Host target Mode flags */
 	CAM_SEND_SENSE		= 0x08000000,/* Send sense data with status   */
 	CAM_TERM_IO		= 0x10000000,/* Terminate I/O Message sup.    */