COMEDILIB_CFLAGS: Fix for separate build directory.
COMEDILIB_CFLAGS: Fix for separate build directory.

When doing an out-of-tree build, the comedi_version.h file is in
the build tree, not in the source tree.  The CFLAGS needs an additional
-I option so the compiler can find it.

Signed-off-by: Ian Abbott <9e6ba6483b6a3e14d61f7c987e72ecb5b46122d6@mev.co.uk>

Linux-Comedi/comedilib,Linux-Comedi/comedilib,olsonse/comedilib,Linux-Comedi/comedilib,Linux-Comedi/comedilib,Linux-Comedi/comedilib,olsonse/comedilib,Linux-Comedi/comedilib,olsonse/comedilib,olsonse/comedilib,olsonse/comedilib,olsonse/comedilib