Fix gcc warning:
drivers/isdn/i4l/isdn_ppp.c:1581: warning: large integer implicitly truncated to unsigned type
<seq> is unsigned int.
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>