Staging: comedi: drivers: fix coding style issues in me4000.c

This is a patch to the me4000.c file that fixes up the following
issues:

ERROR: space required after that close brace '}' 		   x 13
ERROR: spaces required around that ':' (ctx:VxV) 		   x  3
WARNING: line over 80 characters                 		   x 96
WARNING: braces {} are not necessary for any arm of this statement x  2

Signed-off-by: Gustavo Silva <silvagustavo@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>