wine: fix build breakage with ncursesw

The configure script doesn't detect ncursesw at all hence breaks the
build. Backport a patch from upstream for this. Fixes:
http://autobuild.buildroot.net/results/426/42669ca3b7215765a59a85c53ed724cbff79384e/



Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>