The map_single() function is not defined as static, even though it
doesn't seem to be used anywhere else in the kernel. Make it static to
avoid namespace pollution since this is a rather generic symbol.
Signed-off-by: NAlexandre Courbot <acourbot@nvidia.com>
Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>