isdn: whitespace coding style cleanup

isdn source code uses a not-current coding style.

Update the coding style used on a per-line basis
so that git diff -w shows only elided blank lines
at EOF.

Done with emacs and some scripts and some typing.

Built x86 allyesconfig.
No detected change in objdump -d or size.

Signed-off-by: Joe Perches <joe@perches.com>

drivers/isdn/i4l/isdn_concap.h

@@ -8,6 +8,4 @@
  */
 
 extern struct concap_device_ops isdn_concap_reliable_dl_dops;
-extern struct concap_proto * isdn_concap_new( int );
-
-
+extern struct concap_proto *isdn_concap_new(int);