Fix kernel module build.
Since 'OBJS=' line is inserted _after_ bsd.kmod.mk, OBJS value is
overridden by the line (ahh...) Hopefully, 'OBJS=' line is inserted
after 'SRCS=' line, but there's no handy way I suppose (sed's command
'i' requires to follow a newline, but how can I put a newline within
a one line?)
Since the contents (actually, kernel module) are changed,
Submitted by: sobomax